@Riley_S @Carl thanks for info on any potential discounts. The link indeed goes to the old version which I've wasted countless hours on. Please update us when the correct version is available.

@Carl I've installed almost a dozen normal Kasa Smart Dimmers without issue. I've now gone through 4 V1.8 and all but 2 was DOA. 1 worked until a firmware upgrade fried it. Is Kasa/TP-Link offering...