No internet connection inside app

Hello,

When i'm trying to test my app on a iphone 6(s). I run in to the problem that the application can't use the internet connection from the phone.

So when i'm trying to get a rss feed from a wordpress website to show up it just keeps loading.

The same app runs great on a Android device and on the air simulator with iphone 4.

I am using Flash builder 4.7 with air SDK 20.0 on a windows 8.1 pc.

The iphones (6 and 6s) both on IOS 9.2.1 are connected trough usb.

For the debugging i have been using the development license.

Is there a security setting that i could change for this or is there a different reason?

Thanks in advance!