@Godilox, first, please don't use all CAPs.
There's no way to "merge" devices onto one account, per se. You have to factory reset one of the devices and then link it to the other account. You'll want to close the factory reset device's old account and cancel any Roku subscriptions that were on that account. You can see any subscriptions when you go to https://my.roku.com/account/subscriptions and sign in with that account's credentials. If you have any subscriptions that weren't through Roku (e.g., Netflix) those subscriptions won't be affected, but you will have to sign in again once you factory reset the device. If both you and your son have separate subscriptions directly with a provider (like Netflix), you'll have to cancel one of them through that provider. That's not a Roku issue.
Note that Roku devices linked to the same account will have the same channels/apps and adding/removing a channel to/from one will add/remove it to/from the other.
How do I factory reset my Roku® streaming device? | Official Roku Support
How to close your Roku® account | Official Roku Support
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.
