Unfortunately, I am in the same boat. I have been a staunch supporter of iGrill, owning both the mini and the iGrill2. While iDevices owned the hardware, updates were seamless and connectivity seemed to improve with each release.
The August 11th app update by Weber resulted in a disturbing loos of functionality as well as a decrease in range. I was jazzed that Weber picked up the device, as ownership by a true outdoor cooking company that really listens to its customer base should have only made a great accessory even better... unfortunately, that has not been the case, and Weber so far has not met their own deadlines in bringing back functionality.