Startapp problem

Hi! I have uploaded my first app to Google play and integrated startapp. I have a few hundred add impressions but no downloads (as shown in startapp website) how is it possible if app has downloads? No revenue as well… Please explain this to me. Thanks!
App here

you have very few installs… and lots of ratings. this means Google might penalize you for fake reviews.

Wait a day for those statistics that you see in the startapp dashboard, but you need more users in my opinion. lots more.

I know there is few downloads but it should show them in startapp because it has been 4-5 days. I am just worried That I integrated ads wrong. And what does that penalizing do?