Activity Sharing Error
I was sharing activity with 1 person, then suddenly for a few hours I could see there activity, but they could not see mine. The next day the connection was completely lost. I tried adding him back and receive the "There was an error sending your Activity Sharing Invitation. Try sending it again." error. When he sends me a new invitation I never receive it.
Since then, I have unpaired / re-paired, rebooted, updated to the newest OS on iphone (10.3) and apple watch (3.2), and removed / restored my apple watch on icloud, but continue to receive the same error. I've done each of these things multiple times over the last several days.
The only thing I haven't tried is setting up my apple watch as a new device. I've always restored from backup. The problem, however, seems to be with the phone, but I'm not sure where to go from here.
Help!
iPhone 6s Plus, iOS 10.3