Peacock Activation

I am trying to activate my free Peacock Premium subscription. My assistant portal shows the 'Activate' button, but logging in to Peacock results in the error: 'Your Xfinity account is already linked to another Peacock account.' 
I have already tried clearing my cache, using multiple brand-new email addresses, and attempting the activation in an Incognito window, but the error persists. This is a known backend synchronization issue. I need a Tier 2 specialist to open an ECM (Enterprise Customer Management) ticket or perform an Account Entitlement Reset to manually clear the stuck Peacock promotion flag from my Xfinity ID.