watch has a red exclamation point
I unpaired my son's old apple watch from his phone and tried hooking up to his sisters now it has a red exclamation point. What do I do?
Apple Watch Series 3
This user process is suitable for Watch series 3 or later, OS 8.5 or later and iphone iOS15.4 onwards only
https://www.youtube.com/watch?v=l3Y2TBTfHTI
Otherwise make a genius bar appointment to have it recovered.