Why wont the magnetic cat flap latch go down?

The magnetic cat flap latch may not go down due to a misalignment between the flap and the frame, preventing it from closing properly. Additionally, dirt or debris around the hinge or latch could be obstructing its movement. A weak or damaged magnet may also fail to hold the flap in place. Checking for these issues and cleaning or realigning components can often resolve the problem.