If you have problems connecting channels on new versions of chat, it may help to delete all folders and files from the folder C:\\Users\\USERNAME\\AppData\\Roaming\\sheepChat-ng except the file "settings.json". This solution helped several users who had all the channels working on the old versions, but did not connect on the new ones.
In future versions, we will try to fix this problem. We apologize if this problem caused any inconvenience to anyone.