The latest Polar Flow app 4.10.2 version for Android, which is now available for download via Google Play, brings a fix for this issue. Apologies for the inconvenience this problem may have caused you.

We're afraid this issue still persists. Our sincere apologies to everyone affected.

We're working to get this problem fixed as soon as possible. Thank you for your continued patience.

The work to fix the issue is still ongoing. Unfortunately we cannot share an estimate for the fix at this point. Thank you for your continued patience.

Sorry to inform you that we still haven't been able to find the root cause. We would like to emphasize that neither the iOS version of the Flow app nor the FlowSync software are affected by this issue. Thank you for your patience and understanding.

We're aware that some users running Flow app Android version 4.10.0 or 4.10.1 have lost their sport profiles on their watches. What's more, the pre-training menu of the watch may not open or a training session cannot be started.

We are investigating the root cause and hope to provide a fix soon. As a workaround, please uninstall the Flow app on your phone, restart your phone and re-install the Flow app from Google Play. Then synchronize your watch again with the Flow app. Apologies for the inconvenience and thank you for your patience.