A user can register an ASUS device either using a mobile number or using a valid Gmail id. If you want to choose the Gmail option choose the “Register with email” option from the Sign-in page and if you want to register through a phone number, choose the “Register with mobile number” option. When a user is done filling up information on the required fields, a verification link will be sent to your registered mail. You need to click the verification link sent to your mail id to activate your router.asus.com account.