Zooz Switch Range Test Tool

Has anyone used the Range Test Tool on the 800 series Zooz switches like the Zen71 or Zen72? If so, did the stated instructions (Hold bottom paddle for 10 sec till flash, release and quick press twice) work for you? I've tried it on a few different switches with no luck. After 10 sec hold led flashes but then after 2 quick presses the led just continues to flash same color for a few seconds then stays on solid. Zooz support had me factory reset but still get same results. Wondering if anyone has done this successfully or if maybe there is a bug in the tool?