Rewards / Peacock Premium

I received an offer for free Peacock Premium through Xfinity Rewards due to my Platinum status. I claimed the reward and received instructions to click "Activate Now" within Xfinity Assistant. When I clicked Xfinity Assistant, no "Activate Now" option showed up. I checked multiple times, and "Activate Now" is still not visibile. Additionally, I have submitted multiple help requests through Xfinity Assistant over the last week but have received no assistance nor update. What do I need to do to activate my Peacock Premium offer?