Gameplay won't work in android

Everything is working fine in editor , But not working after packaging for android ( not even work in Mobile preview in editor ).
I got no errors when packaging…
I tried in many other devices but no luck…

​​​​​​Audio quality is also bad and weird.

Also I got a massage on opening app that ’ this app is build for older devices etc…’

Note : I have no game mode , it just a actor bp and I use level bp to move it.

My game is full ready to lunch but I can’t figure out the solution