Ran outside to check my system, and it's all good. I used Soundshield deadening throughout the car (doors, floorpan, liftgate), and have no issues with key fob or door locking (unlock and locK). The reason for adding my two cents is that Soundshield has an aluminum core, and I basically encased the doors with it. You'd think there would be interference with that, but it's all good.
My guess is that you have a sensor blocked or not reconnected somewhere. Good luck.
My guess is that you have a sensor blocked or not reconnected somewhere. Good luck.