and what would you like to tell me with that?
That a 3rd party product is causing a problem.
Your FSDT Products are only working corect with FSX/P3D Default ?
That's only what we can guarantee. Especially in this case, since the problem is obviously caused by something that has been released years after JFK so, it should be the developers of the more recently released product that should, eventually, check compatibility of their product with products already established on the market.
We, of course, have a Trial version, so everybody can test if our products are compatible with a specific combination of addons, before purchasing.
No other Airport have problems with FTX Global / EU Landscape.
That's not the case.
These products cause a lot of issues with so many airports. Which is why, they have a configuration tool for this (there wouldn't be any need for such tool, if they didn't caused any problem) , and which is why you'll find plenty of threads on OrbX forums to solve similar issues caused to any airports.
Is every user of your FSDT Scenery a FSX/P3D using the Default stuff ?
No, but they usually understand they cannot expect we would fix problem cause by other products, and they usually go on those developers forum to ask for solutions:
For example here:
http://www.fsdreamteam.com/forum/index.php/topic,13919.0.htmlWith a solution posted on the proper place, which is the OrbX forum.