When I try to install Sourcetree 3.3.6 on a Windows 7 VM, I am able to login to BitBucket, but that is where the journey ends.
After logging in, the web browser says page cannot be accessed and Sourcetree installation buttons are disabled.
I have been asking for support since 3 January 2020, but with little response and no success.
I am able to log in and use both Bitbucket and Sourcetree from my WIndows 10 host.