Unable to activate advanced admin tool access on my Xfi Gateway

I used to be able to go to 10.0.0.1 to administer my Xfi gateway, but now it tells me to use the app. I installed the app, and can seemingly authenticate, but I want to get into the admin tools. However, when I follow directions here: https://www.xfinity.com/support/articles/admin-tool-access

I am unable to 'View WiFi equipment' as instructed. The option is not available.

What needs to be done to allow admin access?