Gravity Offline Language Learning Voice Recognition Sensor CMDID always there

I'm trying out the sample code of the Gravity: Offline Language Learning Voice Recognition Sensor, following the wiki here. I'm using the code for I2C on Arduino Flora. 

 

I observe:

When I say the default wake-up word “Hello Robot”, the module wakes up and reply “I'm here”.When I say any of the preset commands, such as “Turn on the light” or “Turn of the light”, the module does nothing, and the CMDID is always 0 no matter which command I try. 

 

I've tried between myself and multiple colleagues, including both native and non-native speaker. None of the command spoken was every recognized. Any ideas? Any help is greatly appreciated!! 

 

I attached the code and Serial output:

 

And this is a sample serial output when I try to say different command (e.g., “turn on the light”)