Aqara FP1 and Aqara FP1E are two different devices.
The last time I tried, the old FP1 was not exposed via Aqara Matter hubs (E1, M3) to other hubs, Hubitat included. I don't know if anything has changed lately, will try again in the next days when I have a chance.
Matter Advanced Bridge - Aqara table lists which Aqara Zigbee devices were found to work via the community Matter Bridge and which did not work. It should be the same when using the Hubitat built-in 'Generic Matter Bridge' driver.
The old Aqara FP1 works OK when paired directly to Hubitat via Zigbee. Two community drivers are available for installation from HPM—one is named 'Aqara Human Presence Sensor FP1', and the other is named 'Aqara P1 Motion Sensor', which I wrote. The community forum thread dedicated to the last one is here. Note, that directly pairing the old FP1 to HE Zigbee network is not easy, but once paired, it stays connected and I have never had dropping issues.
The new Aqara FP1E is most straightforward to use via Aqara Matter Bridge hubs. It can be also paired directly to HE via Zigbee, but again, pairing is not very easy.
