Jorge Mailbird can only use the stable version, so it won’t be able to use boards created in beta. Document and item sync should be fully interoperable so it’s only the boards to worry about.
When you open a board in beta that was created in stable it migrates it to the new format, and at that point it diverges from stable. Any further changes made to stable or beta would not (and cannot) sync between them because the formats are so different. Stable has a bug where boards are not ordering correctly (and could re-order themselves sometimes) that the new system fixes, but in the initial migration it might be different than it appeared in stable. And bugs in earlier beta versions may have corrupted some boards.
Now that the basics are working properly I’ll focus in on trying to make the migration flawless, trying to keep boards in the same order and making sure everything goes across 1:1. Please let me know if you see any newly created boards doing strange things.
Authentication is definitely not hardcoded, but saving data to the local cache after the initial load takes some time, so if you quickly close the app it will need to download again. That’s the next thing I’m working on - to either make that save faster or show a “Saving…” indicator.
And thanks again for putting up with all this! Your bug reports have been super helpful!