Hi,
Just so I can check what version you may have, could you please tell me what date and time you purchased?
Sorry to hear this, I am looking into this now. I have not had any issues with landing gear sticking, but let me double check. I do know of a parameter that effects that, so I will get back to you. As far as the ATC reply buttons. Maybe try key binding them again. If you used my Hot key binding setup, it may have written over some hotkeys you had before. So I would look into remapping them for the ATC. I will be back shortly about the landing gear.