Hi @Thmonalisa,
Thanks for reaching out to the Roku community!
I understand that you are unable to access Paramount +, there are a couple of things you can try to resolve this issue. Follow these steps in order:
1. Navigate to the channel tile on the Roku home screen, press the * key on your remote, and choose 'Remove channel'.
2. Next, restart your device from Settings>System>System restart. (For Roku TV Settings>System>Power>System restart)
3. Once your player/TV starts up again, go to 'Streaming Channels' on the Home screen, and add the channel back once more. Sign in with your channel credentials.
You may also refer to this link: How to resolve a channel playback issue | Official Roku Support
Please try doing this and see if it helps with what you're experiencing.
Best regards,
Mary