Well, I found a way to prevent the user having to log out, which was to first show the login page (´/login´). Once the user logged in I could then redirect to the authirzation url. This worked fine… until now.
The login page contains a captcha and all that was required was to click the “I’m not a robot” button. Now all of a sudden it asks the user to select images. Doing so and clicking the verify button does nothing. So loggin in is impossible.
I’m pretty much done with Twitch tbh. It’s just not worth my time.