I've just purchased this from Amazon. The box looked brand new, but a few of the stickers on the unit appeared to have been peeled off and then reattached.

When I try to add the device in the app, it simply shows an "Error" message and won't let me proceed. I also noticed that the serial number displayed in the app is different from the one printed on the bottom of the unit.

I've read that if the device has previously been paired to another account, it won't allow a new user to set it up unless it's first unpaired. Does anyone know of a workaround, or has anyone experienced something similar?