Internet not connected

First. Please try starting here if you wish;

https://forums.xfinity.com/conversations/your-home-network/connection-troubleshooting-tips/602da777c5375f08cdea3db9 

Hey @user_fbd1aa, Thank you for visiting our official Xfinity Forums Community support page. We greatly appreciate you taking the time to share your experience regarding the Xfinity Internet connectivity issues. I would be more than happy to offer my assistance looking into this further for you and see what we can do to help stabilize the Internet connectivity.

If you are experiencing intermittent issues, a modem restart may not necessarily resolve the issue. Would you be able to visit our Xfinity Forums 'Tips for troubleshooting your Xfinity Internet connection' knowledge base where it provides steps on how to view the modem signal levels and see if you can provide a copy for us to review here? We hope to hear from you soon.