activation loop

Hi,

I am connected to the internet and most things work however, keep getting redirected to the activation page. ( register.be.xfinity.com/activate) Also may be an xfinity certificate error? 

Talked to tech support, who could only offer sending an onsite tech.  I asked the phone rep to completely remove the modem from your account and to "re-provision" it from scratch. Also ask them to confirm that the provisioning and account data in their database is correct and complete. He said this would take at least 24 hours and leave me with no cable/internet access during that time.

Any other thoughts  or is that my only option?