I have checked a sample photoset_id in the Flickr Api Explorer for flickr.photosets.getPhotos and notice that the 'title' variable has returned to the JSON data.
I also see that espirito-de-aventura's flickrSetId based gallery is back up and running.

It looks like this has just been a temporary glitch in the Flickr API which has now been resolved.
Please post back if you encounter any further problems with Flickr sets.
Thank you.

Thank you for reporting this problem.

Unfortunately, it looks like Flickr may have changed their API, resulting in galleries using flickrSetId failing to display images (although I can find no documentation of this change on Flickr's website).

I'm not sure if this is a temporary glitch or a permanent change but I have notified the developers who will certainly investigate further.
In the meantime, it looks like the problem affects only flickrSetId so a workaround would be to use a flickrUserName or flickrUserId in conjunction with flickrTags instead.

I'll post back in this thread when I have any further new on this issue.

Your Juicebox gallery page is https:// but you are trying to load the font via http:// so it is likely being blocked and not being loaded.

<link href='http://fonts.googleapis.com/css?family=Great+Vibes|Expletus+Sans|Overlock+SC' rel='stylesheet' type='text/css'>

In your other web page, you load the font using the following code, the leading double slash uses the same protocol (https:// vs http://) as the page itself:

<link href='//fonts.googleapis.com/css?family=Great+Vibes|Expletus+Sans|Overlock+SC' rel='stylesheet' type='text/css'>

Use the leading double slash notation in your Juicebox gallery page and this should hopefully resolve your problem.

Unfortunately, due to certain browser security restrictions, it is not possible to preview Juicebox galleries locally (from your computer's hard drive) in all browsers.

When trying to preview a Juicebox gallery locally in Chrome or Opera, you will see the "Juicebox can not display locally in this browser." message. Please see this FAQ for details:
When I view my gallery locally, I see the message "Juicebox can not display locally in this browser". Why?

However, you can preview Juicebox galleries locally in Firefox (after performing the tweak noted in this forum post), Safari (after performing the tweak noted in this forum post) and Edge (no tweak required).

Please note that this applies only to previewing a gallery locally. There is no problem once the gallery has been uploaded to a web server where it can be viewed in any modern browser without issue.

I hope this helps to clarify things.

Thank you for the additional information.

I've just cleared my Mobile Safari and Mobile Chrome caches and have reloaded your gallery again in both browsers on my iPhone.
All five thumbnails appear as expected (no blank icons) and the images load almost instantly (no hexagonal spinner) when the thumbnails are clicked.

There certainly seems to be no problem with the gallery files on your web server (or the speed of the web server itself).
This seems to suggest that the problem may lie with either your device or internet connection (although, from what you say, neither seems likely).
Please try viewing our own demo galleries in Chrome on your Galaxy 7 to see if the same thing happens and let me know what you see.
It might help us to pinpoint the root of the problem. Thank you.

Demo Galleries: https://www.juicebox.net/demos/

I'm glad you're getting on OK. Thank you for letting me know.
I'll mark this thread as [SOLVED] but if you run into any further difficulties, just post back and I'll do my best to help you out.

You're welcome!

That's good news. Thank you for letting me know.

I've just tried to replicate your problem again by switching between galleries in JuiceboxBuilder-Pro (without closing the program) and by opening gallery files in other programs at the same time (which I would not recommend) but I still cannot reproduce the problem you describe so I'm really not sure what the cause of your problem is.
If you can give me a detailed and specific set of steps that I can use to try to replicate your problem, I'll try again.

In the meantime, it sounds like if you edit one gallery at a time (closing and reopening JuiceboxBuilder-Pro each time) and are careful not to open any edit any gallery files in other programs whilst the gallery is open in JuiceboxBuilder-Pro, then you should hopefully be fine.

OK, please let me know if you run into any further problems.

You're welcome!

I'm not really sure exactly what the problem is.
Are you able to explain your problem ("it stays locked in the home page") in greater detail?

Can you give me a set of steps that you go through to reproduce the problem and then let me know exactly what happens and what you expect to happen?

All I can think of at the moment is that either:
(1) You may have some security software installed on your computer which might somehow be interfering with the functionality of JuiceboxBuilder-Pro. Try temporarily disabling any security software that you have installed (please do so at your own risk and ensure that you are disconnected from the internet first) to see if this makes a difference.
... or:
(2) You may have (or have had at one point) a gallery file open in a program (such as a browser, editor or imaging program) whilst the gallery is open in JuiceboxBuilder-Pro and JuiceboxBuilder-Pro has not been able to delete its temporary working folder on closing (due to the other program having a temporary lock on the file) which can render the 'Open Gallery...' button inoperable when JuiceboxBuilder-Pro is next run.
With JuiceboxBuilder-Pro closed, navigate to C:\Users\Username\Documents\JuiceboxBuilder-Pro\ in your Windows File Explorer and, if there is a folder named .tempGallery there, please delete it manually.

Also, please make sure that you are not saving and/or opening galleries from an online synced folder (e.g. Dropbox or Google Drive) as this has been known to cause problems with opening galleries.

I hope that these suggestions help.
If not, then please explain your problem in greater detail and I'll try to help further.
Thank you.

If you change configuration options or add images to an existing gallery, then you'll need to re-upload:
(1) The 'config.xml' file (which stores the configuration options and the image data).
(2) The new images (in the 'images' folder).
(3) The new thumbnails (in the 'thumbs' folder).

There will be no need to re-upload the 'jbcore' folder (this remains the same for all galleries) or the 'index.html' file (which contains the gallery's embedding code).

NB
You will need to re-upload the 'index.html' file (or change your gallery's embedding code) if you change the gallery dimensions or background color as these configuration options (galleryWidth, galleryHeight and backgroundColor) are set in the embedding code rather than the 'config.xml' file.

Modifying the gallery's 'theme.css' file (or updating Windows) should not prevent JuiceboxBuilder-Pro from opening the gallery.
In fact, I have modified your gallery (the one I downloaded earlier) and can open the modified gallery without any problem in JuiceboxBuilder-Pro. (I run the latest release version of Windows 10 Pro 1903 Build 18362.418.)

I really do not know what might have caused your problem .
If you had a gallery file open in another program (for example, if you had the 'config.xml' file open in a text editor) whilst the gallery was still open in JuiceboxBuilder-Pro, then there is a chance that JuiceboxBuilder-Pro would not be able to empty its temporary working folder when closing the application but this usually results in the 'Open Gallery...' button being inoperable (rather than triggering an 'Invalid Gallery Folder' error message).
In any case, I am glad to hear that you have been able to resolve your problem. Thank you for letting me know.

I have modified your gallery and have emailed you a link to the zip file.
The modified gallery is inside a folder named 'Annee-modele_MODIFIED'.

I have modified three files:
(1) index.html - I added the necessary code to override the Download Button's functionality.
(2) config.xml - I added some configuration options (and changed some others).
(3) theme.css - I modified line 825 to change the icon for the Download Button.

Open the 'index.html' file in a browser and you'll see the result.

Please note that although the gallery will open in JuiceboxBuilder-Pro, the Download Button will still have the regular Download Button icon when viewed in JuiceboxBuilder-Pro's live preview window. (JuiceboxBuilder-Pro reads only the gallery's 'config.xml' file when opening a gallery and knows nothing about the modifications made to the 'index.html' and 'theme.css' files.)
Also, if you do open the gallery in JuiceboxBuilder-Pro and re-save the gallery on the 'Publish' tab, then please note that the modifications will be lost (as JuiceboxBuilder-Pro will overwrite the modified 'index.html' and 'theme.css' files).

I have included the original gallery in my zip file (in a folder named 'Annee-modele_ORIGINAL') so that you can compare the 'index.html', 'config.xml' and 'theme.css' files to see the changes that I have made.

I hope this helps.

Opening a gallery in JuiceboxBuilder-Pro is an unrelated issue to your original query.
I can open your 'Annee-modele' gallery in JuiceboxBuilder-Pro without any problem. (Thank you for providing a sample gallery.)

My suggestion above requires modifying a couple of gallery files ('index.html' and 'theme.css') but this will not affect JuiceboxBuilder-Pro's ability to open the gallery (although if you open such a modified gallery and re-save it, your modifications will be lost).

Hopefully the instructions below will help.

As your 'Annee-modele' gallery opens in my own JuiceboxBuilder-Pro, your problem is not with renaming or moving the 'config.xml' file or with any errors within the file so the most likely cause is not actually selecting the gallery folder (but perhaps trying to select a file within the gallery folder) when attempting to open the gallery.

I hope this helps.

Unfortunately, it is not possible to 'attach' the Back Button to the Button Bar and then have the 'new' Button Bar horizontally centered. If you center both the Back Button and the Button Bar, then they will overlap each other (as you have discovered).

You could try to reposition the Back Button relative to the Button Bar using CSS but this might be quite difficult and you might also run into problems. (Juicebox would not know of your modification and would expect the Back Button to be elsewhere which might cause problems when redrawing the gallery, for example when the gallery is expanded.)

One other possible solution would be to repurpose a Button Bar button which you do not currently use and turn it into a Back Button.
Such a modification (overriding Juicebox's own handling of a Button Bar button) is not officially supported but it should not cause any problems (that I am aware of) and it should also not be too difficult to set up.

For this example, let's use the Download Button (which, from your screenshot, you are not currently using and which appears to the left of the buttons that you are currently using).

(1) Make sure that the Download Button is displayed on your Button Bar by setting the following configuration option.

showDownloadButton="TRUE"

(2) Change the icon for the Download Button to be the Back Button 'home' icon. Open your gallery's 'jbcore/classic/theme.css' file in a plain text editor and change lines 823 - 826 from:

.jb-bb-button.jb-bb-btn-download:before
{
    content: "\e017";
}

... to:

.jb-bb-button.jb-bb-btn-download:before
{
    content: "\e014";
}

Please note that the line numbers above refer to the current version of Juicebox-Pro (v1.5.1).

(3) Change the rollover tooltip text for the button from 'Download' (the default text for the Download Button) to 'Go Back' (the default text for the Back Button) by setting the following languageList configuration option:

languageList="Show Thumbnails|Hide Thumbnails|Expand Gallery|Close Gallery|Open Image in New Window|Images|Next Image|Previous Image|Play Audio|Pause Audio|Show Information|Hide Information|Start AutoPlay|Stop AutoPlay|AutoPlay ON|AutoPlay OFF|Go Back|Buy this Image|Share on Facebook|Share on Twitter|Share on Google+|Share on Pinterest|Share on Tumblr|of|Send Email|Go Back|Password|Incorrect Password.|Regarding image|in gallery"

You'll need to set this configuration option manually as it does not appear in the JuiceboxBuilder-Pro interface.
Please see the International Gallery Text support section for more information on the languageList configuration option.
Please also see the Setting Config Options support section for details on how to set a configuration option manually.

(4) Override Juicebox's own handling of the button. First, in your gallery's embedding code, change:

new juicebox({

... to

var jb = new juicebox({

... so that you can use the Juicebox-Pro API (to check when the gallery is ready and then change the functionality of the Download Button) and refer to the gallery via the variable 'jb'. Next, add the following JavaScript code before the closing </script> tag in your gallery's embedding code, changing the URL in the window.open() function to your own Back Button URL.

jb.onInitComplete = function() {
    $('.jb-bb-btn-download').empty();
    $('.jb-bb-btn-download').off('click');
    $('.jb-bb-btn-download').click(function() {
        window.open('http://example.com/index.html', '_self');
    });
};

Your gallery's embedding code might now look something like this:

<!--START JUICEBOX EMBED-->
<script src="jbcore/juicebox.js"></script>
<script>
    var jb = new juicebox({
        containerId : "juicebox-container",
        galleryWidth: "100%",
        galleryHeight: "100%",
        backgroundColor: "#222222",
        buttonBarHAlign: "CENTER",
        languageList: "Show Thumbnails|Hide Thumbnails|Expand Gallery|Close Gallery|Open Image in New Window|Images|Next Image|Previous Image|Play Audio|Pause Audio|Show Information|Hide Information|Start AutoPlay|Stop AutoPlay|AutoPlay ON|AutoPlay OFF|Go Back|Buy this Image|Share on Facebook|Share on Twitter|Share on Google+|Share on Pinterest|Share on Tumblr|of|Send Email|Go Back|Password|Incorrect Password.|Regarding image|in gallery",
        showDownloadButton: "TRUE"
    });
    jb.onInitComplete = function() {
        $('.jb-bb-btn-download').empty();
        $('.jb-bb-btn-download').off('click');
        $('.jb-bb-btn-download').click(function() {
            window.open('http://example.com/index.html', '_self');
        });
    };
</script>
<div id="juicebox-container"></div>
<!--END JUICEBOX EMBED--></body>

I hope this helps.

You might also like to put forward your suggestion (to add the Back Button to the Button Bar or at least not have the Back Button and Button Bar overlap when they are positioned similarly) by posting it in the Feature Requests forum thread.
This keeps all the ideas together and ensures that they are not overlooked by the developers.
I do not know the likelihood of any suggestions being implemented in future versions but this is certainly the best place for all ideas.
Thank you.