Android Question facebook audience network


Dear Sirs,

please note that i used this library in the link below, so the test ads worked perfectly but when i moved on to the live ads we saw that there are requests but the live users are not seeing these ads and so there is no impression.

also note that i have contacted facebook support regarding this issue, they told me that my application is integrated with waterfall ads but it should be with bidding ads, because the facebook waterfall service has stopped by facebook. so how can i integrate my application with bidding ads, is there a new library that i would need?