House ads expect of admob

Hey guys,

We wanted to promote our new app in few of our related apps. We have integrated Admob, but theirs house ads is not working. We don’t know why, it is set up right (I hope), but fuck it.

So, I am looking for something else, how to do it??
Is there any other options for propagating your own app in your apps?
I want to still have admob banners, so I don’t want to use new advertising network.

Or if you are using admob house ads, can you look at my settings of them and tell me, if there is anything wrong? I am getting impresions to house ad…but for example yesterday it was 3 impresons from 3k of impressions total.

Link to screen of admob: