Door lock problems

When I bought the truck about three months ago, I had to have a new master switch for the door lock installed due to the driver door lock not working while using key fob as well as button on switch. All other locks (passenger front, both rear doors, and tailgate) worked fine along with all windows. About a month ago all door locks except the driver and tailgate quit working using either the key fob or button. I have tried the lock button on both the master driver switch and passenger switch. I can manually work all the locks fine and they work as they should. All the windows are working properly. There are no random pop ups or downs. What could be the issue?

*Driver door and tailgate lock and work as they should.
*Passenger front and both rear doors do not work using and switch or key fob.