First, check that your ONT and router are powered on and that all cables are securely connected. Restart your router and ONT, then wait 10 minutes for the connection to come back online.
Check the lights on the ONT and router for any warning or fault indicators. If the connection is still not working, contact WorldNet Support and let us know which lights are showing on the ONT and router.
For step-by-step checks, see our No Internet troubleshooting guide.