Thanks for your inquiry.
We understand that you would like to utilize your direct subscription from the Paramount+ app on your Roku device. Typically, there should be a sign-in option to enter your subscription information within the channel. However, if this is not the case, we recommend contacting the channel provider's support team directly for further information regarding the features and functionality of the channel. Please note that many channels available on Roku are developed and maintained by the channel provider themselves.
Let us know if you have any other concerns.