Bat Jungle (need help to check admob behaviour)

Hello,

I've recently uploaded a new android game: Bat Jungle ( Google play url: https://play.google.com/store/apps/details?id=bat.jungle)

I need your help because I think somethings wrong with appodeal.

As you can see here:

There quantity of response ads to request is very low. Apparently in my mobile and my brother's one everything works fine and every 3 deaths an add is shown...

Would appreciate your help specially for people living outsite Spain.

Thanks in advance,

Sergio