Sourcetree login error

Its been a while and I wanted to update the branch with the work my partner has put in. Then when i try to pull a window appears to get me to sign in with my Atlassian account. Only it keeps reappearing sometimes even multiple windows. I've tried resetting my password multiple times, tried downloading sourcetree again and creating a new project and repository and reupload the files. But every time the window appears it will not let me sign in and instead multiple appears.

Regards ssschoubye