Hello, I recently upgraded my iPhone 13 to iOS 18.0, and I've encountered an issue with VPN applications. After downloading and installing the required certificate for the VPN, I noticed that it does not appear in the "Certificate Trust Settings." Because of this, I am unable to mark the certificate as "trusted," which results in the VPN application's features not functioning properly. This issue is critical for my VPN usage, and it was not present in previous iOS versions. Could you please provide guidance or suggest a solution to this problem? Thank you for your assistance!