Hi @bethjoy20,
A warm welcome here at the Roku Community!
We understand you want to add the Showtime channel to the Paramount+ channel. If you need further assistance with the subscription on your Roku account, getting help from our Billing team may be more effective.
You can contact them here, then choose 'Account, payments & subscription.' They are the best ones to help you out with that matter.
Please let us know if you need anything else.
Best regards,
Chel
Jecheal R.
Roku Community Moderator