Carla, we can't have the only people using both a Bitbucket and a Trello account before Trello and Bitbucket merged. You would think Atlassian can fixit.
I opened 2 tickets one with Bitbucket and one with Trello, yet no one seems to be able to help.
I have a Bitbucket account using an email address firstname.lastname@example.org and I have a Trello account using the email email@example.com
At this point when I log into bitbucket I am logged out of Trello and vis-a-versa.