The Aqara FP2 uses Wi-Fi instead of Zigbee or Matter/Thread like most other Aqara devices. Since Aqara doesn’t provide a public API for integration, there’s no official way to add the device to Homey.
However, as mentioned, you can integrate the FP2 using the HomeKit Controller Community App for Homey. This allows Homey to act as a HomeKit controller, enabling control of the FP2. Keep in mind that the QR code on the FP2 is not a Matter QR code but a HomeKit QR code, which you can use for pairing.
Aqara is working on a Matter update for the FP2 but when this will be launched is still unknown.