I have the best immigration lawyers you can imagine. I know since I also had the worst years ago. The current people are great, not the cheapest, but they really come through with everything. Today they did send me some forms to sign and send back. As Microsoft Word files. Of course they only open as garbage on my computer. I asked for PDFs and these poor souls can not even create them.
Kind of funny that people rather send around a format that can be edited, does not work in all cases and even can contain malicious software.
And, again, these are probably the best immigration experts you can find.
Not being able to send forms and text in PDF is like saying ‘we have no email’. In 1999.