Mega Airport Prague is the first airport fully controlled by Airport Controller (Split, Zurich and Berlin-Tegel uses just part of it) and hence there could appear some issues not experienced before. I believe this will be over soon as we already tackled most now (four days after the release). The Airport Controller is a technology which should raise the bar a bit. The main purposes of APC are to avoid ground poly flickering, controlling PAPI lights, windsocks, low visibility procedures and visual docking system. The Airport Controller is just technology behind and it was never intended to be controlled manually - hence there is also no manual for it. Please be aware that manual triggering of APC is not a fix and it is also very dodgy workaround.
So, when you do not find answer in any of those advice below, please send us you configuration files as described at the bottom of this post.
To get an idea why we decided to use and develop APC and what it does or could, please read information in this spoiler: