When your device's subscription ends, Realer stops treating the control device as active for cloud access. Remote control through the Realer platform is no longer available.
Protected control-device API requests are rejected by subscription policy. HTTPS firmware should handle the subscription-inactive response documented in response codes; MQTT firmware should expect broker credentials and route permissions to stop working when the related entitlement is inactive.
Your device should continue to behave locally as designed. Before the subscription expires, put any connected electromechanical system into a safe state or a known local fallback. You can reactivate the subscription to restore cloud API access.