Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Assuming this is a PIN for Roku and not something required by Showtime ...
Your Roku PIN is entered or updated on your Roku account at https://my.roku.com. You can also set when the PIN will be required.
Be sure you are logging into the Roku account indicated by the email address shown via Roku menu path Settings > System > About.
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well. If this post solves your problem please help others find this answer by clicking " Accept as Solution.".
Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X