Cannot import pkpass on iphone, only shows black screen

[jurosm]

All validation is ok on the online validator (except Has icon@3x.png file (not mandatory))

My code:

bool hasSeatRow = !string.IsNullOrEmpty(model.Seat) || !string.IsNullOrEmpty(model.Row);

PassGeneratorRequest request = new PassGeneratorRequest
{
    PassTypeIdentifier = PassTypeId,
    TeamIdentifier = TeamId,
    SerialNumber = DataGenerator.GenerateSerialNumber(model.TicketId),
    Description = model.EventDescription,
    OrganizationName = model.OrgName,
    LogoText = model.EventTitle,
    BackgroundColor = "#FFFFFF",
    LabelColor = "#262626",
    ForegroundColor = "#000000",
    Style = PassStyle.EventTicket
};

request.AddHeaderField(new DateField("date", "DATE", FieldDateTimeStyle.PKDateStyleShort, FieldDateTimeStyle.PKDateStyleShort, model.PurchaseDate.Value.DateTime));

request.AddPrimaryField(new StandardField("title", "EVENT", model.EventTitle));

request.AddSecondaryField(new StandardField("location", "VENUE", model.Location));
request.AddSecondaryField(new StandardField("row", "ROW/SEAT", hasSeatRow ? $"{model.Row}/{model.Seat}" : "N/A") { TextAlignment = FieldTextAlignment.PKTextAlignmentRight });
request.AddAuxiliaryField(new DateField("date-event", "DATE", FieldDateTimeStyle.PKDateStyleMedium, FieldDateTimeStyle.PKDateStyleNone, model.BeginDateTime.Value.Date));
request.AddAuxiliaryField(new DateField("time-event", "BEGIN/GATE", FieldDateTimeStyle.PKDateStyleNone, FieldDateTimeStyle.PKDateStyleMedium, model.BeginDateTime.Value.Date) { TextAlignment = FieldTextAlignment.PKTextAlignmentRight });
request.AddAuxiliaryField(new StandardField("price", "PRICE", $"{model.Currency} {model.Price}"));

request.Images.Add(PassbookImage.Logo, File.ReadAllBytes(Path.Combine("assets", "logo.png")));
request.Images.Add(PassbookImage.Logo2X, File.ReadAllBytes(Path.Combine("assets", "logo@2x.png")));

request.Images.Add(PassbookImage.Icon, File.ReadAllBytes(Path.Combine("assets", "icon.png")));
request.Images.Add(PassbookImage.Icon2X, File.ReadAllBytes(Path.Combine("assets", "icon@2x.png")));

request.TransitType = TransitType.PKTransitTypeGeneric;
request.AddBarcode(BarcodeType.PKBarcodeFormatQR, model.QrCodeData, "ISO-8859-1");

request.PassbookCertificate = new X509Certificate2(Cert);
request.AppleWWDRCACertificate = new X509Certificate2(AppleCert);

return Generator.Generate(request);

[jurosm]

The issue was solved by generating a new certificate.