If you’re using the FAKKU version, you’ll need to check in their forums if the fix for it is still around, since Hongfire’s dead. Make sure you downloaded the latest release of GGMod. Make sure you have the game correctly patched with IPA. Coordinates and girl cards will only work if your game is the same version than mine. Please make sure your game is up to date, with the last update installed (japanese version being 630, FAKKU version being whatever the Extend DLC uses).
Please read the frequently asked questions page.