[ProjectGSX]

When I copied my icons over, I put them in Leaf.theme/icons. If you are putting them in another area, that could possibly be the problem. Try putting them in the icons folder and respring your phone, see if that fixes it.

There does not appear to be anything wrong with the icons you posted. So, if its not an issue of the icons being in the wrong place, then I dont know what to tell you. Id contact that theme developer and ask them to integrate the icons youre missing into their next build.