EDIT: I figured out what was causing the issue, I forgot I had to hold down right click while going through the dialog prompts. (Wow I know right I suck) Now I'm going to try to modify it so I can use the 1, 2, 3, and 4 keys instead of F9, F10, F11, and F12 because even when using the arrow keys, I can't take my finger off the right click, so I still have to move my left hand across the keyboard to use them. Using 1, 2, 3, and 4 will be much easier because I won't have to move my hand at all.
EDIT 2: It worked! By changing the keys in the LCPDFR.ini to D1, D2, D3, and D4 (guessing D is for decimal) I can now use those keys in-game.