@user_xn2lev With Peacock through NOW, you can activate your Peacock subscription by following these steps:

Go to xfinity.com/yoursubscriptions and log in to your account with your primary Xfinity ID and password.
Note: If you don’t see your Peacock subscription listed, go to xfinity.com/yoursubscriptions.
You’ll reach the Xfinity StreamStore, where you can easily activate and manage your streaming subscriptions.
Click Activate next to Peacock Premium.
Enter the email address you want to use for your Peacock account. Then, click Continue.

Any Peacock login issues should be directed to Peacock Customer Support.
Create your Peacock password and provide other account details. Then, click Activate.
If you already have a Peacock account, you’ll be prompted to enter your existing Peacock email address and password. Then, click Sign In & Activate.
You can now watch Peacock Premium content! To begin, click Start Watching Peacock.

Please let me know how far along you get in this process and what errors or missing information appears. 

I get logged in but then it says we have two addresses related to the account. Selecting either one results in:

We're sorry.

Please contact us and one of our friendly and knowledgeable representatives can help.

When I try, I get the automated assistant which sends me in a loop about contacting support but no prompts to get to a related topic. How do I get around this?

Thanks for the clarification @user_xn2lev have you also attempted to speak to Peacock Customer Support about the two addresses? Go to: 

•  peacocktv.com and log in.
  • Reminder the Peacock email and password may not be the same as your Xfinity credentials.
    • You could’ve used a third-party (non-Comcast) email address to sign up for Peacock. Try multiple email addresses.
• Click Account Settings from the Who’s Watching page.
• Make sure the Plans & Payment is selected, and check the subscription status under Your Plan.
  • If the plan is billed by Xfinity, it's all set and will receive the Peacock Premium promotion.
  • If Your Plan doesn’t show Xfinity, try and identify the email associated with their Peacock account. 

If you're unable to identify the email associated with the premium offer let me know and we can take addtional steps to fix this. 

I don’t have an existing Peacock account.

I use my email to login, and Peacock prompts me to select a plan.

@user_xn2lev Could you please send our team a direct message with your full name and full address? I may need to get this issue submitted to our upper-tier tech support team. To send a direct message:
1. In the top right corner, you'll see a little chat icon near the bell icon. Click the direct message icon 
2. Click the "New message" (pencil and paper) icon
3. In the 'To' line, type "Xfinity Support" there. A drop-down list appears. Select "Xfinity Support" from that list (an "Xfinity Support" graphic replaces the "To:" line)
4. Type your message in the text area near the bottom of the window
5. Press Enter to send it. An official employee, such as myself or whoever is first available, will respond. Thanks!