Android devices now have a battery optimization mode that essentially puts apps to sleep if you haven't engaged with the specific app in a while. Please make sure that iSharing is excluded from this battery optimization, as it can significantly impact real-time location updates.
General Android (e.g. Nexus, Pixel, LG..)
Settings > Apps & notifications > Special app access > Battery optimization > change “Not optimized” to “All apps” > iSharing > Don’t optimize
Settings > Apps > top-right menu > Special access > Optimize battery usage > change “Apps not optimized” to “All” > turn off for iSharing