Where is the [Edited] so-called "Services" => "Internet" => "Manage Internet" option under the customer.xfinity.com web portal??

Hi,

Assuming no smart phone, and no [Edited: "Language"] smart phone google appstore app, for the life of me, I cannot comprehend WHERE [Edited: "Language"] is the option under the customer.xfinity.com (accessed via a Windows 10 / desktop web browser such as Firefox or Chrome), that would allow a Comcast Xfinity subscriber / account owner to:

1. See the list of devices currently authorized connecting to Comcast / Xfinity wifi hot-spots.

2. Allow the customer to remove one particular device from the list shown at (1).

The so-called joke of "documentation" always mentions about these steps:

1. Login to xfinity.com

2. From your logged in account, select "Internet" from the "Services" tab.

3. And once in there, select "Manage Internet".

I can do steps 1 and 2, but there is no [Edited: "Language"] "Manage Internet".

[Edited: "Language/Inflammatory"]. This feature that allows one to see a list of currently registered devices, and allowing un-registering them (so that any new attempt at wifi-connecting to an Xfinity open network / wifi hotspot will be met with a prompt for authentication), was working, about 2-3 years ago.

Why isn't this feature working anymore?

I only have a plain DOCSIS 3 modem, no Comcast-provided wifi router or gateway.

Thank you.