I tried downloading the mod and it said the files are corrupted or missing format.
Viewing post in Foxhole: Maidens Battalion - Warden Female Mod comments
About the download, I tested here, it's fine to download, not sure if it's any problem with the download, but it should work now. About how to use the mod, I'm not sure if you are trying to install, but you don't need to click to install or anything, you just copy and paste on the right directory, read the instalation steps I put on the page and you should be fine. The game will automatically read the files that's on the directory and load into the game in the right order.