I'm having the same issue. I was using the chrome extension below, but it kept buffering/restarting every 5 mins. I saw that the desktop version was suppose to fix that issue. I uninstalled the chrome extension and installed the windows version (running windows 10). Upon trying to open I get the same error you described. I tried to white list it more in the windows firewall and running it as administrator - no luck.
I guess I'm going back to the chrome extension version and cry when it continues to refresh every 5 mins.
Is this issue being looked into?