Whitelist link iOS without using plugin "cordova-plugin-whitelist"

Is there some way to whitelist URLs without using “cordova-plugin-witherlist” in iOS?
Now I am using this in combination with inAppBrowser, but when I try to access some link, the loading get stuck forever.
In android it is working fine.

this is how I am using it.
Every link in config.xml is declared as follow:

<access origin="https://LINK" />
<allow-navigation href="https://LINK" />
<allow-intent href="https://LINK" />

In index.html I have this:

<meta http-equiv="Content-Security-Policy" content="default-src * data: blob: ws: wss: gap://ready file://*;style-src * 'unsafe-inline'; script-src * 'unsafe-inline' 'unsafe-eval'; connect-src * ws: wss:;">

But it is not the first one that I’m trying.

Could you please help me?

Thanks in advice.