Not sure what you mean by “muted”.
The only things I know of are
- banned from the channel, which you know about
- you get globalled, which prevents you from connecting to chat at all for 30 minutes
- account suspended from Twitch, so you can’t login to the account at all.
It kinda sounds like you might refer to the account being blocked from the destination channel due to moderator monitoring/blocking the account(s) you are using. But you can’t monitor a mod really. And the accounts you are using are being flagged on the channel as a ban evader. So the mods can see it but regular chatters cannot.
For account problems please reach out to support.
Check the raw response log in case you are not catching a error/server response or tmi.js is intreprating and eating it.