I’m very sorry @Jorge for not getting back to you sooner! It’s very strange, it shouldn’t be possible for boards to delete themselves like that. Were the boards missing in both stable and beta versions?
I’ve been working on a full rewrite of the sync system, which is almost done now, and I’m just working on finalizing edge cases. Once it’s done, we’ll run on it ourselves for a few days to really stress test it before releasing it to beta. I’m hoping it will be ready to test before the end of the year.
As opposed to previous backend plans I’d shared, this is an upgrade on top of the existing structure so it won’t require any migration and everything will work the same, except much more stable. There will be one major new feature though - the desktop app will save everything to files, including boards and settings, so you’ll be able to back them up.