Bitbucket authentication fails on console

[ndh]

I created a bitbucket account and there created 3 private repositories.

Now I can't clone with the https url. The only way to clone the repositories is via SourceTree (what means at least that my passowrd and username are correct)

When I try to clone on console with:

git clone https://[myUserName]@bitbucket.org/[myUserName]/repositoryname.git

I get a prompt: Password for 'https://[myUserName]@bitbucket.org'

and when I enter my password I get: fatal: Authentication failed

I tried to setup my SSH key but it didn't work.

Could that be somehow related to the fact that I changed my username after creating the repsitories (using the new URLs then of course)?

[ndh]

I created a new account without renaming the username and everything worked like a charme, so it seems that changing the username is not really supported...