your first question is a good one. No other AI planes cannot land on a carrier, Microsoft did not program the AI to do so. And question number two is a bear . if u did get on and was booted out then you might have been "zoned"; it is just a term for be rejected form the Zone.
if you couldnt launch a game it could have been one of two things that i have learned 1. you might have to change your router or unplug from it. 2. you have to shut your firewall off or change its settings by right clicking and the blinking "online" computers in the bottom right of your screen "default area".

I hope this helps