Thanks for reaching out. Let me help you out.
A few questions: when did the update happen? Is the Mi Fan Pro still working in the Google Home app and via voice commands? Have you tried some troubleshooting before?
If you haven't already, unlink and relink your Mi Fan Pro in the Google Home app to see if that resolves the issue. Check out this support article on how to remove and add your fan.
Let me know how it goes.