Death Adder V2 page up/down issue

My page up/down buttons aren't working during my games I play. They will increase/decrease sensitivity or any other function I bind to them in Razer Synapse, but I do not want any Synapse or mouse function button assigned to them. I tried disabling any Synapse binds to them but they are still not registering any clicks in-game. I need these two buttons for key bindings when playing games.