How to sign out of Apple TV+ on ROKU
At a rental and watched Apple TV on ROKU. How do I sign out my Apple TV
Apple TV 4K (3rd generation)
Log into https://appleid.apple.com/account/manage
Then in the Devices section click on your device.
To remove a device, click on the Device name and then click Remove from account.
Or go to Settings > [username] > [device name] on an iPhone or iPad
Or go to Apple menu > System Settings > [username] > [device name] on a Mac.