User somehow created a new account not linked to my boards.

[Keith OBrien]

Should be @daviidharris3 but now signs in as @davidharris226

[Torben · Accepted solution]

That would usually indicate that they logged in with a different email address, which then would log into a new or different account. Have the user reach out to trello.com/contact and we'll assist them in getting into their original account.