Exactly, how does it work?

FA sometimes deletes the thing you are drawing at the current moment if sometimes you exit the page or click somewhere else like your follower feed or whatever and then sometimes when you go back your whole drawing or animation is gone. It a simple glitch but hard to fix.

Actually guys, this is a little pro tip for you: your browser stores your anim progress (it's connected with the address) 1. Your browser has lost the data of your anim -> it's gone 2. Maybe you opened "https://flipanim.com/beta" instead of "http://flipanim.com/beta". Then your progress seems to be gone. Copy both adresses, open them. If you're lucky, your progress is still there.

If you don't use beta, the same goes for the normal editor https://flipanim.com http://flipanim.com ^ check both, one of both could still contain your anim

You're welcome you can access flipanim via HTTP or HTTPS, which are just transfer protocols (normal and Secure/encrypted) you better save your anim file in the beta editor, this makes it safer Spread the word, mate :)

How?