We understand that you want to link the Roku device to your information. Do you have a Roku account? We would recommend creating a Roku account. For more information about how to create a new account, visit our Support page here: How do I create a Roku account
Once your new account is set up, try to perform a factory reset on your device and link it to your new account. For more information about how to perform a factory reset, visit our Support page here: How do I factory reset my Roku streaming device?
Hope this helps. Please let us know if there is anything else we can assist you with.