I had one roku device for a year, now have added two more and created an account that I can see the two new devices. How do I go and add the old one. When I select "Link a Device" it says enter the code from the TV - but the old TV is not displaying a code. Thanks for the help.
As @makaiguy mentioned, you will need to try to perform a factory reset on your old device to get a link code that will enable you to add it to your newer Roku account. Please be aware that performing a factory reset on your old device will remove all the channels and settings, and once linked to your newer Roku account, it will have the channels that your other devices have, as long as the channels support that device.