Ah sorry haha must've clicked on too many links. Yes, this was supposed to be on the Local Coop thread, my bad ;;
I played around with the plugin a bit and realized that I had the map on Loop, specifically, "Loop both". Apparently when the map loops, the script breaks and the character can't move in a certain direction, you may want to try it out. For now, I've taken the loop off and it works perfectly fine, thanks!