It’s a wifi device, not an Aqara zigbee app device, Peter.
That guide can be improved on the “guiding” level here 
You can add it by using the Homekit Controller app (no fruit needed), for almost 2 years now:
All FP2 posts:
https://community.homey.app/search?context=topic&context_id=156&q=fp2&skip_context=true
