Unable to push to bitbucket with HTTPS authentication

[ricka_bitbucket]

I am trying to push my changes to BitBucket. I have tried my old BitBucket useraccount and my newer Atlassian account (with email).

On the Tools -> Options -> Authentication tab I added my credentials (it had to be the old BitBucket user name here). But when I push it still doesn't accept the user/password combo.

If I open the terminal from SourceTree and then manually push it also requests user/password. This seems to accept both my old username, and the new Atlassian user account email.

How can I solve this? I'd really like to simply push from the SourceTree interface.