WiFi not working

First. Check here for info about any possible wide area outages;

https://www.xfinity.com/support/status  

Use a cell phone internet service, a public WiFi hotspot, or a neighbor's internet if you need to in order to check it.

Or you can use their Xfinity App: https://www.xfinity.com/apps  

Hey there, @user_q6t0fp, thanks for reaching out through Xfinity Forums regarding your connection. Were you able to check on the information provided by @EG, and did that help with your connection issues?