Never prompted to setup peacock email address for free Peacock as Diamond Member

Received Peacock as a Diamond member for freet. I activated the promotion. I was never prompted to enter an email address for peacock. I get stuck in a loop where I try my comcast email and that fails and I am prompted to buy a subscription. When I state on peacock that I don’t know my email it prompts me for first, last name and how I pay my bill…it is supposed to be free from Xfinity… where is option to setup a peacock email address when it is active and free?