@Dc23
Thanks for letting us know about the issue with Paramount+ on your Roku! Here's what you can try: first, remove and then reinstall the app. That usually fixes the problem. It’s also a good idea to restart your Roku device before adding the app back to help everything work better.
Remember to check if your Paramount+ subscription is standalone or through The Roku Channel, as they’re different. Make sure your subscription credentials are correct, too—just go to Home > Settings > System > About on your Roku device.
Let us know how it goes!
Roku Community Team
Jharra Q.
Roku Community Moderator