Hello @arine98A6,
Thank you for your message. I am sorry you are having this problem. These questions and answers are from the document: Everything you wanted to know about Favourites in Adobe Firefly:
Q: I cannot find my favourites! What happened to them?
A: Are you using the same browser on the same computer where you favourited them? Because they are stored in the browser cache, you can only access a favourite in the same browser on the computer or mobile device it was favourited on.
Q: I am using the same browser and all my favourites disappeared. It is the same browser on the same computer. Can I get them back?
A: Unfortunately, if you are using the same browser on the same computer and they are no longer there, they are most likely gone forever. This could happen if, for example, you cleared your cache in the browser, used a utility program that claims to clean up space on your computer (which frequently includes deleting the browser cache), or ran out of disk space (causing the browser to delete them).
I said "most" likely, because there are steps you can take to rewind your cache if you had already been backing it up, but most people do not do that. My primary platform is Mac and I back my browser cache up with Time Machine on the Mac, so I can go backwards in time and restore my cache from a point in time. This has saved me a few times when something was deleted from my cache and I was able to roll the cache and settings back a day. If Windows was my primary platform, I could do something similar on it.
My best,
droopy