How do I change the size of my ad banner from 320px wide to 480px wide?

1- my app is only runs on landscape mode, so i set the size of my AdBannerVioew to 480x32 but when i load the app, and i see the "test ad" it doesn't cover the width of the screen, and it's only 320p开发者_运维百科x wide, is it because it's not an actual ad, and it's just for test?

2- I don't want to show the ad all the timer, every 3 minutes i want to show the ad for about 15 seconds and then hide it, would apple approve this?

Have you tried the AdBannerView to 480x32 programatically?

myAdBannerView.currentContentSizeIdentifier = ADBannerContentSizeIdentifier480x32;

Apple would probably approve of you showing your ad only for a little bit, but your revenue will vary if you're hiding and showing the ad. Here's the official documentation.