- Go to twitch.tv site
- Click on lock icon
- Go to cookies
- Delete all twitch cookies
- Refresh site.
- Do Not Go to twitch extension, just refresh twitch.tv site
- Accept cookies
- login on twitch.tv - it will pass
- go to extension and login too - it will pass
- Go to opera://browserjs and disable browser.js. Login to Twitch and, if everything works, enable browser.js again.