Thank you for trying my suggestion but I notice that the paths in your embedding code are incorrect.
I meant for you to try the exact code I posted above (rather than just adding a leading slash to your full https:// path).
Please try again using the code I posted above.
Incidentally, I notice that you seem to have removed your 'shumbatestgallery' gallery folder and have replaced it with a 'shumbatestgallery1' gallery folder which seems to an incomplete gallery folder (it does not contain a 'config.xml' file).
If reinstating your original 'shumbatestgallery' gallery folder and using the code from my previous post does not work, then please try the following.
(1) Create a sample gallery in JuiceboxBuilder-Pro and save it to a new empty folder named 'my_gallery'.
(2) Upload the entire 'my_gallery' folder to your root directory.
(3) Create a new HTML file in a plain text editor containing the code below and name it 'test_file.html'.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Juicebox-Pro Gallery</title>
<meta charset="utf-8" />
<meta name="viewport" id="jb-viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1, maximum-scale=1, user-scalable=0" />
<style type="text/css">
body {
margin: 0px;
}
</style>
</head>
<body>
<!--START JUICEBOX EMBED-->
<script src="/my_gallery/jbcore/juicebox.js"></script>
<script>
new juicebox({
baseUrl: "/my_gallery/",
containerId: "juicebox-container",
galleryWidth: "100%",
galleryHeight: "100%",
backgroundColor: "#222222"
});
</script>
<div id="juicebox-container"></div>
<!--END JUICEBOX EMBED-->
</body>
</html>
(4) Upload the 'test_file.html' file to your root directory (alongside your 'my_gallery' folder).
(5) You should now be able to view the gallery on its own web page by visiting https://www.ridgeback-douala.net/test_file.html
This should test the baseUrl functionality on your web server.
If this test scenario works, then something on your own gallery's embedding page may be causing the problem.
Load your own gallery's embedding page and check your browser's developer tools for JavaScript errors, custom CSS which might be hiding the gallery or HTML elements which might be obscuring the gallery.
If this test scenario does not work, then something on your web server may be causing the problem.
Check to see if you have an '.htaccess' file on your web server with any rewrite rules which might be interfering with the gallery files.
I hope this points you in the right direction.