Need help to reactivate livewallpaper after kill by task manager samsung

Hi guys,

I just recently submit my livewallpaper created by B4a into samsung app store. After a while, they reject my app submission due to this defect :

Defect Id :5242915
Ad-Hoc
The applied wallpaper is turn off if application is ended through Task manager.
Device / Version :
GT-I9300 I9300XXELLA
SGH-N064 SC06DOMALJ3

<Defect>
The applied wallpaper is turn off if application is ended through Task manager.

<Procedure>
*Pre-condition: Set live wallpapers 'River Side Creek Live Wallpaper'.
1. Execute application.
2. Long press the HOME KEY > End the application through Task manager.
3. Check the screen.

<Expected Result>
The applied wallpaper should be maintained.

Here is the video of the QA process :
https://anonfiles.com/file/c7ae5541eed70ca6288366855b4668c0

The thing is, is this possible ? after the wallpaper killed using task manager it is feasible for us to maintain this ? is this QA error procedure or is it possible for me to comply with this ?

How can I do this using B4a livewallpaper library ?
Really thanks.

Note: this is the first time that samsung reject my app submission due to this reason (kind of strange with this rule)