Welcome to the Community! Can you please provide more details? When is the last time you could see data?
Confirm which account you're logged into: In Trello, click your profile picture → Manage account, and check the email address. Please make sure it's the same account you normally use for Trello.
Check closed boards: Go to your boards and check whether the missing boards appear under Closed boards.
Try on an incognito window or a different browser.
Are others experiencing the same issue?
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.