TeamViewer not working, unable to find server....

My PC has no problem connecting to this website, yet when trying to connect TeamViewer, it is complaining (Computer & Contacts - Error):

"Sign In request failed!  The server did not respond. Please try again."

When first attempting to login on the website, it complained that this wasn't a trusted device.  Odd, since this is the box that's been running TV since March.  I re-added it anyway, and restarted the TV app, but that did not solve the issue.