I can't authenticate to sourcetreee with my Bitbucket username

[karina.castro]

Filed to get user details for user[xxxxxx@xxxx.com]
You do not have permission to access URL https://api.bitbucket.org/2.0/user
The request returned with status code 'Unauthorized'

I have windows 7

Sourtree 2.1.11

.NET Framework 4.6.1

Thanks to anyone who can help me