Hi Vu,
First as per the IAB specs, as VPAID creator we are required to play the video ad inside the video slot given to us by the client video player.
So that makes it difficult to negotiate with third party vendors when any issues arise because they blame us for not following the rules so to speak.
One such issue we are facing with is in attaining a certificate from a third party vendor that will allows us to play our ads via VPAID in their video ad ecosystem.
They specifically require us to play the video ad inside the video slot they provide so that they can access the video slot for their own purposes.
For now - they will not give us a certificate to play our ads on Android. Any workarounds will really help.
thanks,
Zameer