oAuth using Swift SFAuthenticationSession

Changed to kraken, after entering user id & pwd started getting Bad request as attached screen,
Once it is failed, keep getting this to any further calls:
Getting {“error”:“Not Found”,“status”:404,“message”:“”}

URL:
https://api.twitch.tv/kraken/oauth2/authorize?client_id=myclientid&redirect_uri=https://api.twitch.tv/helix&scope=user_read&response_type=token