If you are not seeing your swing statistics such as swing speed, please try completing the troubleshooting steps below in the order presented.
Make sure you have a valid Swing Analyzer Monthly or Annual Subscription.
Check your Account status on your Apple Watch.
Note: This label must show Swing (Monthly) or Swing (Annual) before each swing shot detail get save to iCloud for analysis. In other words, any sessions that you saved before you subscribe to Swing Analyzer will not have any swing details.
Check your internet connection. Ensure your iPhone is connected to a reliable data connection (Wifi or cellular). This is because each swing detail is stored to iCloud during your play so there must be a reliable data connection at all times.
Check your iCloud Connection.
If TennisKeeper cannot save your swings to iCloud, it will send you a notification. This will help you identify what connection problems you are having. For example: You can find the notifications on your Apple Watch Notification Center.
Start your session. When you finished, save your session. After you saved your session, open the app on your iPhone. Go to the Metrics view. You should be able to see your swing details and swing speed.
If you have validated the above steps and it is still not working, try these steps:
The most likely problem is connectivity issues between your Apple Watch and your iPhone and iCloud. They must be able to connect at all times for each swing shot to save to iCloud directly from your Apple Watch.