Issue with identifying caller id with using Call Directory Extension

Question

I've tried many solution for CallKit extension to show caller id.

Steps:

1. Adding call directory extension to my project.
2. Set the developer.apple.com things and app groups(for using userDefaults)

3. Implement the code. (For testing, both phone numbers array which is stored in userDefaults and static number)

4. Allow my app in device settings for call identification and blocking

   private func addAllIdentificationPhoneNumbers(to context: CXCallDirectoryExtensionContext) {
       guard let (phoneNumbersToIdentify, phoneNumberIdentificationLabels) = retrievePhoneNumbersToIdentifyAndLabels() else {
           NSLog("Unable to retrieve phone numbers to identify and their labels")
           let error = NSError(domain: "CallDirectoryHandler", code: 2, userInfo: nil)
           context.cancelRequest(withError: error)
           return
       }
   
       for (phoneNumber, label) in zip(phoneNumbersToIdentify, phoneNumberIdentificationLabels) {
           context.addIdentificationEntry(withNextSequentialPhoneNumber: CXCallDirectoryPhoneNumber(phoneNumber)!, label: label)
       }
   }
   

For static numbers to test:

private func retrievePhoneNumbersToIdentifyAndLabels() -> (phoneNumbers: [String], labels: [String])? {
    // retrieve list of phone numbers to identify, and their labels
    return (["EXAMPLE_NUMBER"], ["EXAMPLE_NAME"])
}

For real life using:

    private func retrievePhoneNumbersToIdentifyAndLabels() -> (phoneNumbers: [String], labels: [String])? {
    // retrieve list of phone numbers to identify, and their labels
    var numbers = [String]()
    var names = [String]()

    let sharedDefaults = UserDefaults.init(suiteName: "group.EXTENSION_NAME")



    numbers = sharedDefaults?.array(forKey: "contactsPhoneNumbers") as! [String]
    names = sharedDefaults?.array(forKey: "contactsNames") as! [String]

    return (numbers, names)
}

But it didn't work. When I call myself from a number which is implemented in addAllIdentificationPhoneNumbers function, I can see only phone number and country name. Do I have to add any code in AppDelegate or somewhere else? I mean incoming call should be handled in main app? Can you help me?