I've found the setup process so incredibly difficult with both Mac OSX and Windows 10. Currently, I'm attempting to connect via BitBucket OAuth connection via HTTPS and SSH and every time I login via the popup window it just shows the BitBucket website logged in and my repos inside the popup window. No redirection occurs. It took me 2 days of troubleshooting to get the Windows PC to connect and now this. As a paying member of BitBucket you would think this process would be perfected. I just installed Sourcetree 2.7.4 on macOS Sierra 10.12.6.