Generally, you could contact a manufacturer with your device mac address and ask them to ‘unbless’ a discontinued device, after which it could be configured with the electric imp app and appear in your developer account. You would have to write new squirrel code to control the hardware and connect from the agent to any third-party services.
Saying that, most if not all imp-based Eaton devices use separate servers and encryption keys, so would not be able to interact with our public cloud servers at all. You can DM a mac address for me to confirm.