My ads revenue suddenly drop to 0 for at least 24 hrs

I found a bug that old version of the sdk (the one before 1.1.4) has a bug on Android machine.
After it played video (played some IOS app ads) I click the link, it cannot find the link for app download (normally is google play store) . After I updated the sdk to 1.1.4, the problem fixed, but my revenue is still 0 with 215 complete videos. How does that happen? And is there anything wrong with old version(1.1.2) sdk?

There was an issue for a brief period yesterday where iOS ads were being shown on Android. The issue occurred after a system update went live. We’ve since fixed the issue. Let me know if you continue to see any iOS ads on Android.

It’s good for now. However, there is another bug showed today. I have two tablet, shield and Nexus 7(2012). Shield cannot show the Ads at all from this morning and my app stops to response while Nexus 7 is still showing Ads.