You have not been banned
In which category are you trying to create a thread?
When last did you log into the forum from your pc connected to CTWUG?
This what I think is what is happening, you are trying to create a topic in a CTWUG only category. You need to connect from a pc of wireless device connected to CTWUG network, this will enable you to see all topics and create a topic in ctwug only categories.