UE + Android= No ads, No Pad documentation, No billing 3

Can we know if it is so difficult to have a little update for Android and mobile integration on unreal, We have no advertisements, nor complete documentation to how use play asset delivry, nor the billing 3 library required by google play, nor correction for frame drop on mobile on unreal 4,26 and 4.27, the .lib file that weighs hundreds of Mb, epic team make a little effort.)