Unable to redeem Peacock benefit

Seeing that my Xfinity account had recently crossed over into the Platinum tier, I figured I'd go about redeeming the Peacock Premium benefit I'm now eligible for. Xfinity's membership benefits page prominently lists 'Peacock Premium, on us' as a benefit offered to Platinum and Diamond tier members. The thing is, I've found no way to redeem this benefit. This is even after combing through multiple prior forum posts from countless other Xfinity customers who'd experienced the same or similar issue.

Here's a summary of what I've already (unsuccessfully) tried:

• Checking my personalized membership benefits dashboard: Peacock Premium isn't listed
• Reading the Activate Peacock Premium promotional offer support article: named benefit doesn't appear in above dashboard
• Visiting xfinity.com/activate-peacock: states 'We’re sorry, your account isn’t eligible for this Peacock offer'
• Chatting with the Xfinity Assistant: directs me to my subscriptions page to activate (not listed as an option) or purchase a bundle via Xfinity StreamStore
• Refreshing; using alternate devices / browsers and the Xfinity app; checking the Xfinity Stream app: no change

Needless to say, a rewards program should not be this difficult and tedious for customers to navigate.

If it matters, I have an existing Peacock account associated with the same email as my Xfinity account. It was used back when Xfinity gave free access to Peacock Premium for all customers, and later, for subscriptions I paid for. However, the account has not had an active subscription in well over a year. I'd appreciate Xfinity's help in getting this sorted. Thank you in advance!