I have a DevKit device that I can't disassociate from a merchant. It also doesn't appear in the list of associated devices on the DevKits tab. It actually doesn't appear in the DevKits tab at all. When I try to associate it with a new merchant I get an error of "Invalid request: That device is already activated". A factory reset does not help. The device reboots and I'm emailed a code that reactivates with the merchant I want to disassociate from.