Admob alignment

Hello,

I have google admob and me need to alignment adv banner like this:

283800-adv1.png

but, i get a banner showing like this:

283811-adv2.png

or like this:

283812-adv3.png

so, what do I need to do to make the banner appear as in 1 picture (using Unreal Engine) ?

Thanks for the help!