LOL these machines can be frustrating.   With the game turned off try moving that coil by hand and see if the wheel returns to the start then try pushing the other coid to see if it goes forward?  If this works push the coil that locks on until the wheel wont go back anymore. Then check the switches on the opposite side to make sure the switch has opened some up and closed others. If this is all working then the fault is someplace else

Have you visually checked that each switch opens and closes as it should on the relay board?  When you switch the game on does any other relays move?