@ThePeter
Thank you for contacting us about channels reappearing on your Roku Device. We’re here to help!
When you add an app to one Roku device, it will appear on all devices linked to your account.
To check which devices are connected, please go to my.roku.com and log in. Scroll down to the section called "My Linked Devices," where you’ll find a list of all your Roku devices linked to your account. Any app or channel you add to one of those devices will automatically show up on all of them.
Hope this helps!
Best,
The Roku Community Team
Jharra Q.
Roku Community Moderator