Launch and sign into Peacock on your XClass TV and on your cable box.  Once signed into both apps, use your mobile device or computer and sign into https://peacocktv.com.  Go to the Account page and select “Xfinity” under the “Link Provider” option.  Follow the on-screen instructions to link your Peacock account with your Xfinity account.  Once completed, your account will be reverted back to Peacock Premium.

Note: Do not use your XClass TV credentials to link your accounts.