Every other payware airport I own works perfectly fine!
Yes, key sentence here is "I own", meaning the ones you tested. On the MS forum there are several threads reporting many crashes at several payware airports:
LHBP
EDDM
KLCK
LFOU
EGLF
WSSS
So, it seems there's something going on with the sim itself, otherwise you couldn't explain all these various reports about different airports from different developers all coming in the past days.
We are already in communication with Asobo trying to figure out what might be.