I have been using the Sportractive GPS tracker but since upgrading to android 8.1 the tracker stops after about 30 minutes. I uninstalled the app and tried to reinstall it but now it says it's incompatible with my device. Checked on Sportractives site and there is a known problem with various Nokia models since the upgrade from android 8 to 8.1. I tried Strava and this has the same issue, the app stops recording after about 30 mins. Has anybody else encountered this.