New versions of the SportsTracker, SportsTracker PRO and FitCloud apps (version 5.04) are now released on Google Play.
A recent ANT+ Plugin update introduced an issue for the app connection to Bike combined Speed and Cadence sensors such as the Garmin GSC10. This app update fixes the connection problem. You should go to the app ANT+ Bike Speed and Cadence settings and then re-scan for your device. Then future connections will be successful.