Users who do not have a valid OAuth token can check this box and connect.
In the "Twitch User" field, you must enter your channel's username.
Stream Games will connect to your channel's chat with the user "StreamGamesSG".

Full details:
store.steampowered.com/news/app/872...

I am researching whether it is possible to connect Stream Games with a personal account and use it in chats, so that users do not need to generate any tokens.
This will take some time, unfortunately.

I will let you know here, on Twitter, BluSky and Discord.
Thank you for understanding.

twitchapps.com/tmi is an external application, so I have no control.
There is another website to generate tokens, but I will not suggest it because I am not sure if it is a good choice.