If Alexa is having a hard time understanding your questions or commands, it could be because Alexa isn’t hearing you properly. There are a few things you can try to do to fix the problem:
1. Move a little bit closer to your ecobee4 and speak slowly and clearly.
2. Make sure there isn’t significant environment noise.
3. Check to see if Alexa is hearing you properly. On your Alexa App go to SETTINGS > HISTORY and check to see how Alexa has recorded what you’ve said. If it’s not what you said, you can try moving closer to your ecobee4 and repeating the command slowly and clearly.