This works here without problems.
You simply have to enable or add the entry for FreeCommander.
You can also make an entry under General / Open folder with like mine
Path: C:\Tools\FreeCommander\FreeCommander.exe
Parameter: /C “%1”
Windows 11 Home x64 Version 22H2 (OS Build 22621.1194)
Listary Pro 6.0.11.35
FreeCommander XE 2023 Build 884 64-bit donor