Lumintop Prince switch faulty

Hi my lumintop prince switch is faulty. Does anyone know what is the switch or part number?
I tried a omten 1288 but it cannot work. Original switch take lesser time to switch on.

Try changing the washer, between the button and the switch, for a thinner

Ok i will give it a try thanks.

My stock switch is working again…strange.
Stock washer is 1mm thick.
I used a 0.7mm thick washer on another pcb with a omten 1288 and it works.