Can't Connect Twitch to League

I just tried to link my Twitch Prime to my League account and every time I go to think linking process it gives me the error message: There was an error linking your account. Please try again.

I know my subscription went through as HuzzyGames shouted me out when I subbed and the little crown popup says I'm already subbed to him.

What do I need to do to link my two accounts?