Project disappear?

Hello (sorry for my terrible english^^)
I make a project in easel like usual, i save it (online) to work with a other pc (pc near my cnc) but the project is gone of my project page. No trace of it. It simply gone.

So there is some kind of backup somewhere ?
How can i go back to my account to find it again ?

If it’s a bug, how to avoid this ? Everytime make a sort of export ?

(and sorry iam a beginner…)