I have been trying to get my respeaker 2-mic phat to work, with some success. It required installing the drivers from the seeed github, editing the mycroft.conf file to use the correct card in aplay and mpg123, and setting the default soundcards in /etc/asound.conf. Then for some reason after the pi boots I need to run ~/mycroft-core/start-mycroft.sh voice and reconnect to mycroft-cli-client before mycroft will listen for the wake word. I haven’t yet figured out why the last step is necessary.
More info on this thread: