Reset WS-100 WALL SWITCH

I have 2 rocker wall switches Ws-100. Previously connected to ST V1 hub . I upgraded to V3 hub. I removed all associations with V1 and want to reset to default mode and have new inclusion on V3 hub. I can’t reset or include in new V3 hub. Please advise.

Quickly tap up 3 times then down 3 times. If you see the LED blink, the switch is reset. Then you can include in the new controller.

Tried this many times. No LED blinking. I just gave up. Thanks for your response.