[...]changed all the .ini and .property files.
Launching the game with IL2 Selector, but nothing is changed.
By "nothing is changed", I'll assume you mean your game isn't crashing. But, as far as I know, this is simply impossible. If you add lines to your air.ini, the game WILL try to load them, and if it cannot, then it will crash at 60% during loading. The game doesn't just not load lines from the air.ini. Check your air.ini again.
If the air.ini was modified properly, and your game
still isn't showing the new planes, then the only possibility remaining is that the air.ini which you have modified is not the air.ini which the game is using. This may be because the selector is set improperly, or because there is another air.ini in your #SAS folder.
Other than that, your problem seems to be some sort of black magic—I've seen a lot of tech help threads, and nobody before you has ever claimed to have edited their air.ini, to then launch the game and see that nothing has changed at all...