Thank you. I was able to attach the license file and exported the file without watermark. But is there anything changed in Aspose.Slides version 24.9 as our emf images are rendering raster even after setting the option:
auto pdfOptions = System::MakeObject<Aspose::Slides::Export::PdfOptions>();
pdfOptions->set_SaveMetafilesAsPng(false);
if (!pdfPath.empty()) {
pImpl->presentation->Save(StringtoU16(pdfPath.c_str()).c_str(), Aspose::Slides::Export::SaveFormat::Pdf, pdfOptions);
status = true;
}