Be patient my English. It’s super broken.
In my environment, problem cause is random-user-agent extension.
The only way to solve is not “Enabled on this domain” off, just disable or pause extension.
*Shields : on → ok / off → NG
*Trackers & ads blocking : Standard/Aggressive/Disabled → ok
*Block fingerprinting : Standard → ok / Disabled → NG
I’m using stable,beta,nightly and I’m in same trouble this several days.
So I tried some touble shooting method(disable all extensions, clear cookies, etc) but not resolved.
And then I tried guest mode, login error has gone. I saw login code check popup. I didn’t know the reason why.
30min ago, I thought I wonder hidden parameter or env info makes error, and then I disabled extensions one by one.
And now, I reached answer.
I don’t know the reason why keep error when I disable all extension at once but to solve problem is to disable random-user-agent extension only.
my recommend method
1.Shields is on, Trackers & ads blocking is anything fine, Block fingerprinting is Standard.
2.pause or disable random-user-agent extension
**of course if you don’t have this ext, needless to do so
3.clear all twitch cookies
4.avoid cache and reload twitch page (hard reload)
5.login
if you have random-user-agent extension, try it. 