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Just wondering.....are you placing it in the same orientation when you change wrists? Also, are you cleaning the base prior to the change-over?
Yes (if I understand your question correctly). I change the orientation settings to match the wrist I am using. I clean my watch every day after I shower but not when I switch it during the day.
 
+1 – I was going to send it to be replaced. Indoor walks/runs + strength workouts, AW5.

I've been rubbing my skin underneath + the bottom of the watch itself, just sticking my finger in there to "clean" it, and then it works. Not quite an ideal solution, though, I worry I'm scratching it. Will try the Heart app and roll my eyes a lot.
 
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