My Hue switches no longer show in Home app.

How do I find hidden switches in the Home app. I’ve had my Hue dimmer switches in the Home app since there was a Home app. I noticed after the last iOS update Home broke until I updated. Now my switches are gone. I can only control lights directly. I would like to fix the button behaviors I previously had setup for my physical switches in the Home app. My wife is getting EXTREMELY frustrated that she can’t simply push a button and not get some funky nightclub light setting.