Facebook Integration Issue

Hello Everyone,
I was submitting my Ionic app to iTunes and almost released 8 versions of it. Facebook integration was working fine but for this release when I submit app Apple store says that Please ensure that your app is compatible with IPv6 networks. and App gets rejected. When I completely removed Facebook feature App is ready for sale now.

I am using
cordova-plugin-facebook4 1.3.0-0 “Facebook Connect” plugin to connect facebook. What should I do to integrate the facebook again with my App