Axios API calls not just stop iOS - just loading

I’ve got a problem with Axios I think. It’s working fine in the browser, on Android it’s fine, but on IOS it just stops.

In Xcode I’m getting:

Loading app at capacitor://localhost...
WebView Loaded
To Native -> App addListener

I’m pulling data from a WordPress Site (I control it) and I’ve tried to add “capacitor://localhost” for the preflight handle (CORS) but to no avail.

I’ve added “*” for access control in order to test it as well, but doesn’t work.

So, curious, If I need to set some settings in the Info.plist or similar in order for it to work.

I’m pulling data locally (json file) with Axios and that works fine on IOS.

I´ve also added capacitor://localhost, but it just is not working. It works fine on the android device. And it´s definetly a CORS problem as indicated by the Safari developer console.

[Error] Failed to load resource: Origin capacitor://localhost is not allowed by Access-Control-Allow-Origin. (posts, line 0)

I´ve got this on my wordpress site:

$allowed_domains = array(
     if (in_array(strtolower($origin), $allowed_domains)){  
        // header("Access-Control-Allow-Origin: *");
        header("Access-Control-Allow-Origin: $origin");
        header('Access-Control-Allow-Credentials: true');
        header('Access-Control-Max-Age: 86400');
     // Access-Control headers are received during OPTIONS requests
            header("Access-Control-Allow-Methods: GET, POST, OPTIONS");
            header("Access-Control-Allow-Headers: Authorization, Content-Type,Accept, Origin, origin");
            header("Content-Type: application/json; charset=UTF-8");