I just got a pair of QC 35 II and had no problem connecting it to both my iMac and iPhone. I then pressed the action button and Alexa said something like "Sorry I can't hear that, try again later"... so I tried connecting in the Alexa app and it said "We are having trouble pairing with your device". I tried Google Assistant and got the same message. The problem is not with Bluetooth it would appear, but something in the software.
Now no matter what I do, when pressing the action button, the default Bose voice says "Open the Alexa app and try again". I want to know how to actually reset this to factory settings. I've done everything. I've cleared the Bluetooth device list, followed the "reset" (plug in to power source and wait, unplug -- what a joke), rebooted my iPhone (6S), cleared the Bluetooth on my phone, reinstalled both Alexa and Bose Connect apps, installed new firmware in Bose Connect, renamed the headphones, cleared the name -- everything.
Does anyone here have an idea for how to resolve this?