Sorry if this is information that is already know......... It is sometimes difficult to ascertain the knowledge and experience of some posters.
- ED writes journal files to a folder under your "saved games" folder i.e. C:\Users\<username>\Saved Games\Frontier Developments\Elite Dangerous, where <username> is the username you were logged into when playing ED.
- You need a third party software to transfer the information in your journals to EDSM, e.g. EDDI or EDDiscovery.
- EDSM stores this information on its server and you can then access it via their website.
So it really depends on what you mean by "the game does no longer supplies flight logs".
If the journal files are not being written to the "saved game" folders then the folder is probably write protected, preventing ED from writing files there. Either that or ED is getting confused as to where the "Saved games" folder is and is is writing elsewhere.
If you mean that the files are not showing up in EDSM, it is probably because the 3rd party software is unable to write to the EDSM server. This is probably due to your API code being wrong or missing in the 3rd party software, the option to sync to ESDM is switched off in the 3rd party software, the "Saved games" folder specified is wrong or because there is no 3rd party software running.
Or is could be because you are running the legacy version of ED. EDSM now only collects data from the live version.