Just bought an open box Yale YRD-240. I’m having trouble figuring out how to set it up. I don’t see a programming code on the inside of the lock. I found something on the internet that says to put the batteries in, tap the gear icon then 1 then the gear icon. When I touch the screen it sounds like it is trying to lock but it’s jammed. When I wake the screen again and touch the gear icon, the screen goes black. Does anyone have experience with these?