This breakout uses a Nuvoton IO Expander which means drivers written for other MICS6814 boards won’t work - there are Arduino drivers for the IO Expander here: GitHub - ZodiusInfuser/IOExpander_Library: An Arduino port of the Python library for the Nuvoton MS51 Pimoroni IO Expander Breakout
There’s some discussion on this thread if you want to look into writing/adapting your own Arduino driver: MICS6814 - Typical Resistances