Can't access Xfinity Voice Settings

I need to change the number of rings before a phone call goes to Xfinity Voicemail.

Following instructions from a help page on my xfinity account giving me a link to Xfinity Voice Settings takes me to an error page.

The error page say Xfinity needs to reactivate my account.  I'm logged in on my main account, cache is cleared and it has been tried on multiple browsers.

Xfinity Voice
Sorry, but something went wrong.

Please contact us to reactivate your service.

Contact Comcast Customer Care.

Clicking the Contact Customer Care link takes you to the Chat Assistant that just goes around in circles with unhelpful advice. 

I cannot access any of the basic services that should controlled from Xfinity Voice Settings.