I purchased EDDH by SimWings in MSFS Marketplace and installed it. It shows up as Installed in content manager but old default airport loads in the simulator.
Opening Packages window in Developer Menu shows the eddh airport as Unmounted with Registered | Restricted | Forbidden.
Try signing out then signing back in again.
Restart game.
(Marketplace purchases need to be validated through online DRM, it’s possible that a server connection drop out etc can cause this to glitch, if that validation doesn’t happen access is restricted)
If this does not resolve the issue you should check the Zendesk support FAQ and open a support ticket.
For those who are facing similar issue, my problem was my clock was not syncing to correct timezone and hence the DLC were not getting activated during MSFS start. Problem went away after I synced my PC clock.
Oh man, thank you so much.
You are the only source all over Internet who gave me the source of my problem, not getting mounted many planes from 40th update.
Be careful everybody with this. After europe time switching my PC was on correct time but incorrent timezone.