IOs error network

Hi to all

I published my app on PlayStore and everythings works, but after i generate the app for IOs the networks didn’t work.

API not working. If I try to GET or to POST data to server not working.

I make some search but nothing works.

I add these keys to Info.plist, but nothing change!

      <!--Include to allow subdomains-->
      <!--Include to allow HTTP requests-->
      <!--Include to specify minimum TLS version-->
cli packages: (/usr/local/lib/node_modules)

    @ionic/cli-utils  : 1.19.2
    ionic (Ionic CLI) : 3.20.0

global packages:

    cordova (Cordova CLI) : 7.0.1

local packages:

    @ionic/app-scripts : 3.1.8
    Cordova Platforms  : ios 4.4.0
    Ionic Framework    : ionic-angular 3.9.2


    Node  : v6.11.0
    npm   : 3.10.10
    OS    : macOS Sierra
    Xcode : Xcode 9.2 Build version 9C40b

Environment Variables:

    ANDROID_HOME : not set


    backend : pro

Any Idea what I’m doing wrong on IOs, becasu on Android and Web works perfectly?

I’m having the same problem. Could you help me?