(IOS): How to close game when enters in Background mode

We are developing our fisrt game in Unreal Engine v4.20 both Android and iOS platforms. The issue occurs in the iOS version, when i press home to exit the game and then press the game’s icon to re-enter inmediately it shows a snapshot of the last played level follow by restart to the splash screen.

Doing the respective research (The iOS Application Lifecycle | HackerNoon), i found that its the default ios lifecycle, iOS sends the game to background and past at least 5 seconds it goes to suspend, but thats its not the behavior desired.

First we tried with this class: UApplicationLifecycleComponent | Unreal Engine Documentation to close the game by console command, or using the following functions: FPlatformProcess::RequestExit(false); but it does not even listen the ApplicationWillEnterBackgroundDelegate event.

Next We tried adding UIApplicationExitsOnSuspend (How to kill your app when it enters background mode | iOS Dev Diary) into Project Settings->Additional Plist Data, now the game closes and it freezes when we try to re-enter, showing the spanshot of the last level played but no more happends.

I spent more than a week finding solution for this problem and will appreciate anny help, suggestion or advice.