F-18 Buttons

My F-18 Button marked with - Data/N-up/ Norm/D CTR does not work. This is on the Top left of the Center DDI. Can anybody tell the reason. I have checked in the FSDreamnet also but no news.
Flight Simulator and other chat
https://forums.simviation.com/phpBB3/
https://forums.simviation.com/phpBB3/viewtopic.php?f=21&t=62363