As the title says, I can't register the device. Setup through the app works until the last step when it attempts to verify ownership. It then errors out with a message that says "OOPS".
I've also tried setup via USB. I'm able to configure the device to connect to my wifi network using the particle CLI. However, adding the device fails:
particle device add Photon-XXXX
Claiming device Photon-XXXX
Failed to claim device, server said: [object Object]
Evidently the device is still registered to the prior owner. I've searched the particle docs and haven't seen any way around this. Are there any suggestions from this forum?