What can I do if my MagLock® key will not open my cabinet which has the Mag Lock® lock installed inside?
Most likely, the cabinet door itself has shifted slightly out of alignment, and what is probably causing the issue. It is not allowing the lock to unlock properly due to the shift, which can happen in cabinet doors, which is most likely a very, very slight shift. (If these have only been installed recently, it can be that the door was ever so slightly propped up when installing, it might need a mini adjustment.)
Try to gently shift (cabinet door usually tends to drop away from hinge side) the door back into what would have been the original position (a slight variation) and then the Maglock® ‘should’ be able to be open. Once opened, the cabinet needs to be adjusted tightly.