Entire board disappeared from iPhone app

[Adrian]

I've used Trello daily for years and years. Never had a problem. Today, I opened the app to get a link off my main business board and something had eaten ALL my cards. I could see all the normal list headings, but every single card was MISSING. I went on desktop and the board looked perfectly fine, but I immediately made a copy of it just in case. Of course, this is my MOST valuable and difficult to replace board. I was able to see the copied board just fine in the app then, but the original board is still just a skeleton board on the app. 

I'm on the free plan - iPhone 12 and a Windows 11 laptop. Note that I did just upgrade my phone to IOS 26.2 and this *might* be the first time I've opened the app under the new system, but I checked a couple of other boards and they seemed just fine. I also closed and restarted the app - no help there. I did put a brand new card on the board as a test - that one did show up... 

Mysterious! 

[Mark Johnson · Accepted solution]

This is almost certainly a mobile app sync/cache issue, especially after the iOS update. The board is fine (since it shows on desktop), but the app is loading a corrupted local state. Try logging out/in of the Trello app or reinstalling it — that usually forces a full resync and fixes the “empty cards” view.

[Adrian]

Ha! You are a GENIUS. Worked like a dream. Thanks so much for your help. I'm still glad I have a copy of this board tucked away just in case - I was in major PANIC mode that I'd blown up the board. Thanks so much!