cannot pair a second hand apple watch
I just bought an apple watch (second hand) and I cannot pair it with my iPhone. So I've contacted the original owner and asked to turn off Activation Lock and remove the device his Apple ID account.
Then he told me that he already been remove it.
I've tried it again to pair and still nothing happened. I want to seek help from the apple support team and asking for the serial number of the watch but it doesn't show as well on the watch itself.
I am owning a second hand Watch Series 1 42mm.
thanks hope someone can solve from this predicament.