Our Bitbucket/Atlassian accounts were set up with a specific email address, say hello@example.com - but then the company had a name change, and so our email address are hello@example2.com, and these are managed by Google.
I can log in to the Atlassian website using my original example.com email address, but I can not log in to SourceTree on install with it as it keeps taking me to a Google login page, and the old email technically doesn't exist any more (it's just a forwarder).
To make matters even more confusing, I have a separate Bitbucket/Atlassian account set up on the example2.com email, and it keeps trying to log in to that one - which I do NOT want.