Iris V1 sensor keeps blinking

How do I stop an irs V! window sensors from blinking in pairing mode?
I have a sensor that was reading unknown in Hubitat dashboard so I tried to delete and reset but it stays in pairing mode. The dashboard found it as previous but never seemed to connect to it.
Thanks

Blinking means it's not joined.
Try deleting it from Hubitat, then factory reset it, then give it another shot.

how do i factory reset it?