Hi - We have build Nybble and it's working great. We are trying to add Bluetooth. With the iOS app, we find the Bluetooth module and connect to it, and it successfully connects with 3 tones. Then the next screen says "Please assemble Nybble first" and there is no other button so we cannot proceed. We've looked at all of the user manuals and cannot find any information on what the problem might be. Also, we tried connecting the module to the USB module to enter serial commands with our Mac, but this does not seem to be working either. Port is serial, but the serial monitor shows nothing returning when we enter commands. Please help!