Ive had this problem for a very long time, first i was totally IP-Banned from some channels, without me even speaking in them once. Or rarely saying anything, but when i did. It was nothing to be IP-Banned for. So i talked to some admins, and they fixed so that i actually can see the chat. But i still cant chat in some channels, and in some channels i can. And i am 100% i am not banned permanently from any chat because i dont speak the way that would get me banned in the channels i enjoy watching.
I have tried the ?chat_debug=true
And i have no disconnect message on any channel where you cant see my messages.