wifi not working, app shows modem online and ok

You've reached the right place for help troubleshooting your Xfinity WiFi, bobbilly! Is your network name showing when searching for a signal? Have you tried restarting your modem by unplugging the power cord for a minute or two? During that time also check the coaxial connection on the back of the modem, and also at the wall plate. We want to ensure everything is nice and tightly connected.