In my old machine KDFW terminals was not showing but now i got a new pc and when i installed and registered the serials it was all good but days after its not showing up. Please send me a link so i can send the purchase proof.
Your problem doesn't have anything to do with activation. As explained many times, when there's any problem with activation, the sceneries will NOT disappear, they will go back in Trial mode, running for 5 minutes at time.
If you don't see buildings, the problem is not your activation, but some other product you installed that is preventing the software to run.
The most common cause it's the antivirus but, I see in one of your screenshots you use AS2012. If you launch FSX from AS2012, that might also be the source of the problem. Launch FSX normally.