Hello Umberto, again,
I followed all your instructions I could find so far (live update, redownloading the installer, uninstalling all fsdt products incl. the addon manager and manually removing all leftover files, redownloading the installer/live update),...
On any addon scenery (tested various, free/payware, including Basel) the Menu will not appear. On default airports it does - once. Selecting something (stairs/gpu or something else) some vehicles are spawned, and nothing further happens.
The log indicates some files are missing.
As I'm residing in Switzerland, as you do, I assume we're in the same Cloudflare region. Trying various VPN locations doesn't help either.
After trying now for hours to get your product working, I'm really disappointed now. And the only thing I read over and over again is: Try again.
Doing so much troubleshooting for a product which doesn't work (or the installer/infrastructure/file distribution logic/... is broken) can't be expected and you may have to rethink the way this product gets distributed. Right now, it's very frustrating.
Please find attached the newest log from the freshly installed product, with a test in Malta (default scenery) with the Fenix A320. - I confirm, that everything has been uninstalled/deleted/cleaned/reinstalled/reactivated before I ran the test.
I also only have MSFS installed.
Regards
Steve