@spartandrew18 (go green)
Hmm that indicates that either it doesn’t unpair properly (we’ve seen that with a few accessories), the first pairing attempt after unpairing went south, or you need to reboot the device to get it to advertise the unpaired status.
So try a reboot (pull out the battery if needed) and then factory reset and start over (pair to iPhone, unpair, pair to HA).
Oh, make sure you’re on the recently-released 2022.10.5. I think Jc2k got a fix or two in for HAP+Thread.