I could be mistaken, but I was under the impression that Smart Switch 7 is not compatible with the IQ2 panel because its a 700 series type z-wave device, so I ended up getting a few Smart Switch 6’s (which are disconitued, but work well).
You’ll probably have to get Aeotec USB Z-wave to upgrade the firmware of the swithch, I’d be curious to know if that solves the IQ2 issue.