Hi there! Sorry to hear that most of your flash cards disappeared. That definitely sounds concerning. To help you best, could you tell me a bit more? For example, did this happen suddenly after some action (like logging in on a new device, or after an app update)? Also, are the flashcards missing from just one set or from all of them?

In the meantime, a common cause is that the flashcards may have been accidentally deleted or moved to the Trash folder within Knowt. Here's a step-by-step way to check and recover them if possible on your iPhone with iOS 18.5:

1. Open your Knowt app and look for the "Trash" or "Deleted Items" section in the navigation menu.
2. In the Trash folder, use the filtering options to search by "flashcards" as the file type or sort by the most recent deletion date. This will help you find any accidentally deleted flashcards.
3. If you find your missing flashcards there, you can restore them back to your active flashcard sets.

If that doesn't reveal your missing flashcards, have you tried logging out and back into your account or restarting your device? Sometimes syncing issues can cause content to temporarily disappear.

Let me know what you find or if you tried any of these steps already—I’m here to help you get this sorted!