I have viewed your gallery's web page in Mobile Safari and Mobile Chrome on my iPhone 7 running iOS 13.1.2 (I do not have a Samsung Galaxy device on which to test) and your gallery displays and functions as it should.
Please note that on mobile devices, the gallery will be displayed in Small Screen Mode where thumbnails and main images are displayed on separate pages (to give the main images more room to be displayed).
More information on Screen Modes and how Juicebox adapts to different devices and screen sizes can be found in the Gallery Tour.
What exactly do you see when you try to view your gallery?
Do you see a blank area where the gallery should be, an error message or something else?
If you see just a blank area where the gallery should be, then it sounds like you might be viewing the gallery over a 3G/4G connection (instead of Wi-Fi) and that your network provider might be using content modification (which can break websites which rely heavily on JavaScript).
If this is the case, then please see this FAQ which has a solution to the problem.
Why can't I view my gallery on a 3G mobile connection?
I hope this helps.
Please let me know how you get on.
Thank you.