If anyone comes across this when trying to mod older games, I've gone ahead and created a standalone Windows desktop application based on the Java version here. Feel free to test it out, I've only ever tried it with Immortals Fenyx Rising and it worked well there.
Download Link:
https://github.com/srobertson421/Resorep-Tauri-Application/releases/download/v0.0.1/resorepv0.0.1.7z
Should be able to simply extract the 7z file and run the .exe. It functions similarly, click "Add Game" and find the .exe for a game. Add a folder path to both the "modded" and "original" fields and you should be all good to add your texture mods to the "modded" folder.
All credit goes to Ray Wing for the initial version!
Your problem is due to the layering of the mod. All my hair mods try to place as many layers as possible as low as possible so that the sperm lands on them (all the cum that lands above the ear layer is hidden, see https://www.undertow.club/threads/13567/ ).
Perhaps sby has released a Loader add-on that allows you to modify the layers. I think we discussed this with Mari Glasses a few years ago in my import thread (I'm not sure). Try searching or ask him directly, here or on Discord.
Otherwise, you need to modify the mod with the JPEXS decompiler (tutorial here: https://www.undertow.club/threads/19122/ ) and search the script folder for a script (or several scripts) containing a line similar to
this.targetElement = ModElements.DYNAMIC_HAIR_BETWEEN;
(it can be BETWEEN, UNDER or BACK)
and replace it with
this.targetElement = ModElements.DYNAMIC_HAIR_OVER;
(or another layer above the former layer)
Then save the mod and try it out.
It MAY work (I really don't have time to do it myself, test it, do it for all 3 versions, publish it, etc.) or you may end up with other layering issues.
Good luck.