I have written response message correctly. Execution is successful for lambda event request.When I test it on emulator it returns me ok status but in the alexa app under device status it doesn't show updated status. It remains off and also I get device is unresponsive message. Please help with this issue.

I have written response message correctly. Execution is successful for lambda event request.When I test it on emulator it returns me ok status but in the alexa app under device status it doesn't show updated status. It remains off and also I get device is unresponsive message. Please help with this issue.