Removed Homekit Device now can't re-add?

I added an Aqara FP2 and it was working fine, but I decided placement was bad. The only way I could find to reset the zones was to factory reset it (which I did) and then I ended up with the device unavailable in Home Assistant.

But now, it doesn’t appear in the devices when I try search Homekit devices…

Solved. Rebooted the device and it appeared again. I’d already done that, but seems it took a couple of goes to clear