Once you enalbe the DreamCatcher Life skill in the Amazon Alexa app, you don't need to discover your device as you can control Chuango Indoor Camera PT-300Q with your voice. No hub is required.
Say simple commands to Alexa. Examples are listed below:
"Alexa, ask DreamCatcher Life to turn off privacy mode."
"Alexa, ask DreamCatcher Life to turn on privacy mode."