Can only watch Paramount+ on Roku, if I try to watch it on my computer or ipad it ask for me to login with a email and password,my subscription is through roku so how do I sign in ?
You don't. You have discovered the problem with subscribing to services through Roku. You can only use it on Roku.
What you'll end up needing to do is cancel your subscription through Roku, and it will continue until the period of the subscription ends. You'll want to create an account directly at Paramount Plus and pay them directly. You can use the credentials from that account to log in on Roku and on any other device.
You can go ahead and subscribe directly, but you'll be paying more than otherwise necessary for the period of overlap.
And, if you subscribed to anything else through Roku, you have the same issue.
I do so wish Roku would not restrict subscriptions this way. The convenient billing is a good thing, but the restricting use of the account is a major issue for me.
Roku Community Streaming Expert
Note: I am not a Roku employee.
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