Access Denied: Xfinity account functions

Access Denied

You don't have permission to access "http://preview.www.xfinity.com/learn/restart/selection" on this server.

Reference #18.b6643017.1783784328.11c01348

https://errors.edgesuite.net/18.b6643017.1783784328.11c01348

What it says on the tin. Multiple devices, multiple networks. Something is wrong with my account.