The banner ads fit perfectly on the bottom of the screen for the 4s, 5 and 5s but for the iPad, and iPhone 6 and 6 + there too small. What am I doing wrong? I put this code in the GameViewController.swift fie. If you need more info please let me know. Thank you!
let adView: FBAdView = FBAdView(placementID:"PLACEMENT_ID",
adSize:kFBAdSize320x50, rootViewController:self)
adView.frame = CGRect(x: 0, y: self.view.frame.size.height - 50, width: 320, height: 90)
self.view.addSubview(adView)
adView.delegate = self
FBAdSettings.addTestDevice("TESTDEVICE")
adView.loadAd()