Having some issues with Icons

[BlossomPone]

A friend of mine has asked me to create a civilization for him based on Arstotzka from Papers, Please. However, I am having some issues with getting the icons correct. I'm not really sure what to do >_<

Basically, I've gotten the Sponsor selelection icon to work:

However, ingame, the icon doesnt show in the main menu:

I have also attached a copy of the entire mod from the MODS folder, in case that helps