Since two months or so everything worked OK.
Today I tried to push some code and I can't do it. SourceTree keeps rejecting my login. I have Bitbucket account, and when I try to login with Web Browser I am redirected to Atlassian login and it went fine, but with source tree I can't login. If I do refresh token I receive 'OK' but still can't fetch code. If I switch to basic with username / password, rejected again. Now I am not even sure if I should use Atlassian login credentials or old Bitbucket or what? SourceTree works ok with GitHub. This problem is related only to Bitbucket.
Please help.