We have setup Ad manager for mobile device, and assigned videos, the problem is the Ad was not played on Windows Phone and old Android devices. We used HTML5 player and default browser.
Android, Windows Phone, Windows Mobile
Android, Windows mobile OS
Ooyala HTML5 player does not support Ad playback on Windows Phone and Windows Mobile.
In addition, Ooyala HTML5 player does not support Ad playback on Android 2.x/3.x. Ad playback is supported on Android 4.x and above.