inmobi ads banner position under status bar

 I just try to use inmobi ads in my app. I placed an banner in the top left ( set x= 0, y = 0), but when I tested it on my iphone, the banner x-position was correct (on the left), but y-position was wrong, the banner was  NOT on the top, it was lower.

        The second thing I encountered was that after i touched the banner, an ad popped up, then i closed it  (touch the “x”  button), NOW  the status bar  appears (The bar was previously hidden with the command display.setStatusBar( display.HiddenStatusBar ) when i started the scene ), why does closing an ads make the status bar appear?. Anyone got the same 2 issues? Any suggestion to solve these?

Thanks.