I recently installed Picroft on my Raspberry 3. I got my device registered initially. Later when I was trying to use it as my assistant it isn’t recognising my voice.
Can you make sure you are on the latest version? To do that you can do apt list --installed |grep mycroft-core also a good debugging method to see if the picroft microphone is picking up your voice, you can go into the mycroft cli. You should be able to just type in cli at the pi command line and it’ll take you there. If that doesn’t work, do python -m mycroft.client.text.main cli --quiet