Help package buy

I buy a package from unity assets for Iphone score, but does not work when i publish into the iphone, in unity works.

xcode show this message

App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app’s Info.plist file.

how can i fix that please?

This page has a solution: Unity and iOS 9 App Transport Security - HTTP - Fliperamma