I'm trying out the channels feature, but I'm having issues connecting to some channels like # TV. When I try, the peers generally respond with either "Connection rejected" or "No connection permission". Why am I seeing these?

Same issue here while attempting to connect to CHANNEL X. I used to be able to connect to it earlier this year.

I noticed the channel uses a secret key, which I have, but after entering it in the channel options I cannot press OK, button is grayed out.