Whenever I try to clone a Bitbucket repo I get an error because authentication failed. This started to happen a while ago. 

To reenable the account I have to go to "Edit Accounts...", click on the account, click on "Edit" and then on "Refresh OAuth Token". After these steps cloning works without a problem, at least for a little while.

I also periodically get a SourceTree login dialog popping up when SourceTree is running in the background.

I haven't changed my password recently or done anything that I think could cause this problem.

What I've already tried to fix it:

• Remove and add Account
• Completely reinstall SourceTree
• Replacing SSH key