There are simple fixes in most cases for Orbilogin not working. Ensure your device is connected to Orbi's WiFi network. Clear cache or run the browser without cache, or open it from a different browser or device. Restart the router and modem to obtain a refreshed connection. Check for any IP conflicts by attempting with the default IP 192.168.1.1. You can finally factory reset the router if none of the above works. Using these steps should usually get you back into the system rather quickly and be able to administer the Orbi settings without any hindrance.