Since the server failure a couple of days ago, I get this error when trying to add a feed.
Have you tried login out and back in? Let us know if you do and the error is still there and we'll take a closer look.
I also have this problem. I click on sign in using google account, it loads for a while, longer than normal, then "Login error: Error while communicating with data repository!"
Thank you for letting us know! We're still working on database updates and making changes to solve these issues. I'll post an update as soon as everything's up and running normally!
Update: I get the error if I try to add YouTube feeds with "https://", but it works if I use "http://".
Customer support service by UserEcho