I have just finished an application with Ionic. I submit it to the Apple Store. After a check, the Apple team refused me the application because they can’t connect to the application. The problem it runs into is “TypeError: Load Failed”. After many attemps, I finally managed to reproduce the error by using a VPN. So I suspect that my API CORS is not letting the VPN through. About the project :

• The preflight sends me a 204 response with the OPTIONS method
• The POST request returns a status code 307
• API was writed with NodeJS
• I use the package cors with defaults options
• The Front use fetch() to call the API as bellow :

fetch(`${this.api}users/login`, {
              method: 'post',
              headers: {
                'Accept': 'application/json',
                'Content-Type': 'application/json',
              },
              body: JSON.stringify({
                email: user.email, 
                password: user.password
              })
            })

• No issue when I try without VPN but I need to understand how to manage fetch with a VPN to pass the Apple Check.

Thank you for your help, I feel desperate