I've been using Bitbucket with TortoiseHg (Windows 8) with SSH authorization for the last four years with no issues, but suddenly on a push attempt I got the dreaded "abort: authorization failed". When I went to log in I noticed that I could no longer use my username but had to use my "registered email". I really don't want to have to muck about with SSH keys if I don;t have to, is there an easy way to get SSH to work with the existing keys?