Hello, quite for a long time I observe the same bug that you have in your application. The problem is with downloading a PDF from a supplier. The PDF is not recognised and it is said as an unknown file and also the file does not weigh any kilobytes or different - it’s always zero. So first issue is that the PDF is not recognised as PDF and even though when I try to save/download file to files app on iPhone and I add file extension/shortcut “.pdf”, still it weighs 0 kB.