For HOI4 specifically: . Paradox does not use kernel-level anti-cheat. Steam’s basic integrity check only verifies the base executable, not the DLL (for non-VAC games). However, Steam can remotely query your DLC list – if you launch the game and it reports owning DLCs you never purchased, that’s logged. Mass bans have never happened for this game, but individual cases exist on forums.
The tool often comes with community support, where users can find help, report issues, or get updates from the developers or fellow users. hoi dlc unlocker