@houskaa
Edit// Also found this thread, but nothing helps
https://forums.opera.com/topic/61916/twitch-tv-issues-with-opera

Hi,
In general - I was good for the time being till yesterday.
Couldn't accept cookies, mod my chat or do advanced tasks on my twitch channel.
I logged of today, 30 minutes back and got the: Your browser is not supported.
I cleared my cache and cookies. Nothing helps.
Thank you for your time,
housskaa