Paramount+ through Apple

1. The subscription as started in the Paramount+ app on an Apple device, is valid in the Paramount+ app on any Apple device that supports this app. On secondary Apple devices (different from the signup device), you may need to ‘Restore Purchases’.
2. The subscription as started in the Paramount+ channel in the Apple TV app, is valid in the Apple TV app on any device that supports the full Apple TV app. Just signing in to the Apple TV app would be enough.
3. The subscription as started with Paramount+ directly, is valid in the Paramount+ app on any Apple or third party device, as well as on the web. Notably not for the channel of the same name in the Apple TV app.

These would be a different types of subscriptions, with different terms and conditions, different perks and limitations, and not exchangeable as such. Choose what fits your usage best and stick with that. Cancel and resubscribe differently if needed.

I have the exact same issue. I think the issue is that I have no idea what the "randomly generated Subscriber ID" is that is "unique to me and the developer". I immediately tried to cancel subscription but the cost is still seemingly applied and it says I have access to the subscription until a month from now (which is actually untrue). Is there a way to get my login credentials so I can just try to access it directly through the Paramount Plus website or app?