How to Use Your Twitch Prime Sub and Link Amazon with Twitch for Prime
Step 1 Go To: https://gaming.amazon.com/links/twitch/manage
Sign in with Twitch and link, your Twitch account to Prime Gaming.
this will link your Amazon Prime with Twitch Prime (now prime gaming)
You should see your Twitch account and the unlink button on right when you are linked.
Now go to the channel you want to give your Twitch Prime Sub to like DragonBloggers Twitch for example