MSFS FSDT scenery trial versions

[Rafal]

Is it still posiible to try an FSDT scenery before-you-buy as it was in previous sims?

I wanted to do it, but I admit seemingly not to know how.
I went for Universal Installer, clicked Install next to a desired airport and got the message 'Insert your Activation Key for'.
I have also tried to find a solution in this forum and via Google in general, but found nothing. I feel dumb honestly. 

Thank you very much in advance for a reply.

[virtuali]

The Trial for sceneries is no longer available in MSFS, because they don't use any extra software to work.

[Rafal]

OK, Umberto, everything is clear now.

All in all I believe your sceneries are always worth buying, even without trying.
Especially now, during Black Friday. I'm going to get a few more.

Thank you very much for replying and enjoy your evening!