I'm having the same issue and have wasted a couple of hours on this trying to fix the same thing. Its annoying I can't reinstall Viveport Software (I removed it because it stopped starting up) and now I can't start up again. And noone is responding. Not sure if I can still access my subscription whilst this is down but if so then I'm not sure how to so basically paying a subscription fee at the moment for nothing. If this doesn't get addressed soon I'll certainly be cancelling.