Peacock subscription unexpectedly stopped

Accessing Peacock is not the issue. I can log into Peacock, but it does not show an active plan.

When I look at my Xfinity subscriptions here (https://www.xfinity.com/yoursubscriptions), I don't see Peacock present any more, even though I should I have the subscription included as part of my Xfinity gigabit Internet plan.

Thank you for further clarifying. There was a concern with the service affecting our StreamSaver customers or those who subscribe to Peacock through Xfinity. The subscription free with your internet service should not be affected by that. Are you signed in as the Primary user on your account? Everything you have done to troubleshoot was perfect! If you are signed in as the Primary user, we may be missing a code for Peacock in our billing system that we need to add so you can reactivate it on our website again, https://www.xfinity.com/yoursubscriptions. It will not show as an option if the billing code is missing. 

Please send us a direct message with your full name and complete service address to “Xfinity Support”. To do so, click on the direct messaging icon located at the top right of this forums page.

Here's the detailed steps to direct message us:
How to Send Us a Direct Message:
1.  Click "Sign In" if necessary.
2.  Click the "Direct Messaging" icon.
3.  Click the "Start new conversation" (pencil and paper) icon. 
4.  In the "To:" line, type "Xfinity Support".
5.  As you type, a drop-down list will appear. Select "Xfinity Support" from that list.
6.  An "Xfinity Support" graphic will replace the "To:" line.
7.  Type your message in the text area near the bottom of the window.
8.  Press Enter to send it.