Make sure you have activated Vobot and give right request. Vobot embeds a noise-cancelling algorithm that enables it to understand your intention even if there is some background noise. However, your voice must be louder than the surrounding noise level. And getting closer to Vobot within 1m（3.28 feet ) would be better. If you have, please check as the followings:

• Ensure you haven't pushed the [ MUTE ] button when you try to interact with your Vobot.
• Unplug the power cord and talk to Vobot. It might be effected by power ripple, please use a adapter(Be equal to or higher than 2A) of better quality. If it doesn't work, restart it again.
• Open this link: alexa.amazon.com and check the [ Settings ] > [ History ] to see whether history exists. If you find the record voice is unclear, it might be a problem of MIC. Please contact Customer Service Department.

Note:

How to find history?

• Check the Alexa app to see what Alexa heard. On the home screen, select More at the bottom of the interaction card. You can read what Alexa heard, listen to the request, or provide feedback.