IOS compilation errors APP

It does not allow me to upload my application to the AppStore Due to lack of functionality and in the design for general the app in Ios I had to add <preference name = “CordovaWebViewEngine” value = “CDVUIWebViewEngine” /> in the config.xml was what I found to the solution that all requests failed I am clear if it is because of this or if it is because of the very large and visual icons. What should I have at least to authorize it with good functionality? How do I solve the design?