Activated Peacock, Shows as Active on Peacock.com, cannot watch Peacock on TV

Activated Stream Saver Peacock on Xfinity via computer. Subscription hub shows Peacock is activated. Cannot log into Peacock App on X1/TV to watch shows. Peacock requests that I pick a plan. Several attempts to log into Peacock App with email and password proved useless. But, no problem watching Peacock on my computer. Please advise. Thanks