Damn you Admob! Admob not displaying on Android but fine on iOS

Okay, so i have been battling with Admob for the last 6 hours and it works beautifully on iOS but on Android a have had a load of issues, All the code now works and it retrieves the advert but it doesn't display anything despite adding a bg colour the view is hidden. I can see in the console that the ad is received just not shown. Any ideas?

var Admob = require('ti.admob');
 
var adMobView = Admob.createView({
    publisherId: admob_id,
    testing:true,
    top: 150,
    adBackgroundColor:"FF8855",
    backgroundColor: "738000"
});
 
win.add(adMobView);