First, this forum is English only, so you are kindly requested to use English, as a curtesy of other users that might not speak your language.
ALL files for ALL FSDT products, since several years, never installed anything in the simulator own folders, be it FSX, P3D or MSFS. All our files are all installed in the "Addon Manager" folder you select the first time you install an FSDT product, with all the subsequent ones ending in the same folder as well, regardless of the simulator, the only different is that MSFS products are installed into \Addon Manager\MSFS
The installer will only create Symbolic links to the Community folder, which is what allows the sim to "see" the product as installed, and Symbolic links don't take any space so, for example, if you have your Community folder installed on a drive that doesn't have much space left, you can install all your FSDT products in another drive.
About having to use a profile, is not strictly required, but it surely improves how GSX works on an airport.