I basically understand how to link riot accounts to twitch.
But since I made a new riot account, I had to reconnect the acc.
I don't know whether it has something to do with the new acc or there's a technical problem, but in the popup window (in which you log in with riot) there's a continuous loading screen after entering the login data.
Is it about the Riot Games account connection or the "League of Legends Prime Offer"?
It's about the riot acc
If you are sure that the access data are correct, wait a little, it may be up to the responsible servers.