Hello ! I've migrated today from the website to the web application and I could see when reopening the loss or rather the non-loading of all local data (list of cards, decks, app settings, etc.)
When launching, I get this popup, but nothing to do, the loading does not seem to work, the application remains empty even after closing and launching...
I saw on another post that you were having problems with Onedrive.
The database is currently stored there, I will migrate as recommended to another hosting service but for now no more database xD
I have saved more than 25,000 cards on it too ... I would like to find them again ^^

If you go to OneDrive (using their website) in the applications/urzagatherer folder you have a userdata.ugs file
check the file version and restore the most recent one with the biggest size (and save it locally). This is the file you want to manually import to get your database back
Not the latest version on onedrive ! Can you give me the local path before webapp version ? Thx
..... Why i didn't thought about that... xD Thanks !