[HELP] Video have different time and audio desync after conversion

[Lemenus]

Tried with MKVToolNix and then convert - now time is the same, and info in general more correct, but audio is still desynced after conversion, and apparantly internally time still differend - video abrupts at some point. Which means problem still persists. What exactly i should do in MKVToolNix to make it work? And i heard it's possible to do this with FFmpeg, but i don't know how to use it