@casino You don’t need to reboot the router. The router will reboot itself.
During restoration, the router will shutdown network (wired and WiFi) and reboot, you’ll lose connection to the router. If you can reconnect back to the router, it would have finished rebooting. And you can log in to check your changes.
Usually the browser will go back to the Login screen after you reconnect to the router. If it doesn’t, just enter the router management URL into the address bar and hit Return.