After updating the app to v 3.10.0(745), my watch will not connect to my phone. The error code displayed is 24-101. Oddly, while the Activity summary page shows no data (except for a sleep total), there is current data for each category, when I select an activity item. This is on a Samsung Galaxy S24 Ultra, running Android 16/One UI 8.
…and just like that, today it is working.