Absolutely does not work! Hard to figure out but I got it eventually. Set it up half a dozen times, does not track properly. Stopped mining for 2 days, still reads as 1.14 mhz with whacky history graph. Ensured correct btc address after QR scan. No manual update button. Used for a full week. I gave it a fair shake...
Works as advertised. Also excellent developer.
All basic features implemented. Multiple target addresses and workers support remaining.