We have acquire a new branch with a deployed Cisco Meraki MR33. An IT administrator who handles the device before didn't endorse to us the credential to access the AP. The device isn't been removed from the previous network. With that, when creating our network as a new owner of the device, we can't add it into our network since its serial is already been used. Also, we are not able to change the settings even configure the AP. Is there anyone here who can help us to unbind the device from the previous network?, since we don't also have any contact of their account representative from Cisco Meraki before. Kindly see an attached photo.