When I use the combination lock and set the numbers into the gate, it works for a while but the next day the combination lock, Doesn't work anymore and I have to destroy the gate to make a new working one, each day.

The combination lock are easy to unlock by just pressing inventory and anyone can take the combination lock and unlock the gate without using the code.

All the walls can be modified from the outside by just being in the inventory.

Tip for it: Why not make clans, so people that builded any wall or building can interact with it because is set by their clan but others outside the clan can't Interact with it but only destroy or use the code to get in.