2D background scaling on mobile

heya peeps,

Im having trouble scaling a 2D background to mobile platforms and diffrent sized viewports, the problem is that its not scaling with height, the width is fine, just that in the height there are a black bars. now ive tried with draging a sprite into the world, ive tried using 3d widgets, and ive searched for hours upon hours but cannot find any solution at all, any help would really be appriciated.

Thank you for your time.

found any solution?