Hi @Taycan we also have this problem and we are searching a solution, if we find something or if we know that the problem seems to be solved on IOS 15 further versions or in IOS 16, I will let you know. Could you do the same if u find something ? thanks in advance !

Same Problem here ... Ranging/Scanning beacons seems to stop after a few minutes when the app is placed in background (even if we don't kill it). Does anyone have found a solution or know if this "problem" is gonna be resolved in IOS16 ?