I searched for oAuth on these boards and found just a single post from 3 years ago.

I've uploaded my game as an in browser game that starts off with a connect button for a user to enter their twitch name, channel and oauth code to have the game connect to their Twitch chat to enable the chat to play the game.

However, the button doesn't do anything and I assume there is some sorta block on the itch io side of things.

As downloading the game and running it on a computer instead, enables it to work as intended with a windows build.

I hope it's just a setting I missed somewhere, otherwise I won't be able to do in browser play on itch io?

It also could be possible that building the game as  HTML is breaking it (although the first start game button works