My existing Trello boards have disappeared – a new, empty Trello board has been opened?

[Anja Klinkner]

I opened my Trello app on my iPhone.
Then Atlassian asked me to enter my email address or log in with Google.
After that, I was faced with an empty board.
I've been using Trello for seven years and now everything is gone.
I share one board with my husband – he still has this board. I was the admin there.

[Gaurav Kataria]

It is likely that you have multiple Trello accounts under different email addresses (this can easily happen if you use 'login with Apple' on your iPhone - https://support.atlassian.com/atlassian-account/docs/account-issues-related-to-a-private-apple-email-address/

If you have multiple email addresses, then try logging in using a different email. You can reset your password if you forgot it https://support.atlassian.com/trello/docs/recovering-your-trello-account/