Amazon-
Add the security code to the end of your account password on the device or app you are attempting to register and submit again. Steps to enable Prime Music on your TV by using amazon.com/mytv · Keep the activation code that you've located in the earlier section.
Prime Video app/channel on your TV. In addition, you must log in on your Amazon account, which is linked to amazon.com/mytv. A Security Code is generated on your phone for your Amazon account.
Open Prime Video app on you device then Click "Register Prime website" at amazon.com/mytv then Your code appears on the left of the device screen.
Go to play store and type amazon.com/mytv.
Open your device's app store to download and install the Prime Video app.
Open the Prime Video app.
Register your device by selecting Register on the Amazon website.
You will be given a code to enter on a given website.
Register your device by selecting "sign in and start watching" to enter your account information directly on your device.
To register your device using a registration code.
Find the 5-character registration code on your device by selecting Amazon Video home screen.
From your computer, go to Register Your Compatible TV or Device.
choose "register on the Amazon website" to get a 5–6 character code.
Enter your registration code in the text box.
Then code to enter in your account.