Hmm... it's very important to follow the driver notes to the letter for Windows. But I see you say this is happening on Mac as well. We'll look into this!
Driver Notes
Follow all steps here, including clearing the cache with the required tools. Only after then connect your device GitHub - avtolstoy/particle-usb-testing
We will be making an installer for this process, so don't think it will always be so difficult. For now though, I do appreciate your help testing this, thanks