I tried using my Xfinity login and that didn’t work. I signed up on this site and THAT login didn’t work.

I tried using my Xfinity login and that didn’t work. I signed up on this site and THAT login didn’t work.
Best answer by SURFboard Moderator
If this is the first time to access modem GUI or the interface please follow the steps mentioned on the below article and since you have not mentioned the modem model number we helped you with the sample article which look similar to the GUI page you are in.
http://arris.force.com/consumers/articles/General_FAQs/G34-G36-Web-Manager-Access
No account yet? Create an account
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.