Can't connect to twitch

While trying to connect my account with Twitch, after Authorizing with the Twitch popup, I’m returned to the My Account page with the message “We could not connect with Twitch!” on top and under integrations for Twitch username, it says “connection request in progress”. After a few minutes, reloading the page will give me the Connect with Twitch button which immediately does the same thing. On the Twitch site, myTeamSpeak is listed under Connections. Disconnection and retrying has no effect. What am I doing wrong to connect myTeamSpeak to Twitch?

TeamSpeak posted on Twitter a while ago that there is a problem with the Twitch integration.