Yeah, this I know, as you said it earlier, but polygons are made of multiple triangles, usually 2.
While small variations are acceptable in automation, the triangle count should be about 2 times the polygon count, if it is significatively under of over that, you might have issues with your mesh.
The value should appear at the same place as poly count. If it doesn't, the option to enable it is at the same place as the option to enable polygon count.
Edit: For the things you did <>, just redo those things like if you never did them and it should work.