Hi,
I have 3 Roku tvs in my house all under 1 account. Is there a way where all the apps are not connected. For example... main TV has Amazon Prime so it goes on the other 2 tvs. How can I take that off my kids keep buying movies off Prime. I don't want to keep downloading and deleting everytime I want to watch Prime.
Sorry, but no. It's been asked for numerous times. If you only subscribe to channels directly through the provider and not Roku there's really no reason not to set up a Roku account for the children's devices.
If your main concern is your kids making unauthorized purchases, log into your account at https://my.roku.com and create or reset a PIN value. You can then choose when the PIN is to be required, such as before it will allow any subscription or purchase to be made on your account.