I followed this tutorial which states "If you have the Amazon Fire target, the setup for advertising is exactly the same as is described in this article for Android." However, once published to Amazon there are no ads. On the Play store I have both timed ads and rewarded ads working perfectly, but nothing when ported to Amazon. Is there a change I need to make that isn't mentioned in that guide? Should I be using a different APP ID? I've tried the APP ID given by Amazon as well and that doesn't work either. Anyone gotten ads working on both platforms?