[OBSOLETE] ZWN-SC7 Enerwave 7 Button Scene Controller

I was already using that one. However I found this one: Is there an update for ZWN-SC7 Enerwave 7 Button Scene Controller - #12 by mwav3

which has a note " Last Update: 2021-01-26 update by Tim Grimley to work in new Smartthings app"

So I create a new DTM “from code” and published it.

I then followed the manual add steps from Enerwave, press bottom buttom for 3 seconds, press left hand column of lights. And while that slow blinks I do “scan nearby” on ST app, but no device found.

Can you please explain the steps to try and get ST to recognize it? Thanks!