"Server not responding" means exactly that; you need to contact the company that creates the PDF.
But anyway, you write that you cannot open the PDF; can you download it to your local disk, then open it from there?
P.S. what browser do you use?
"Server not responding" means exactly that; you need to contact the company that creates the PDF.
But anyway, you write that you cannot open the PDF; can you download it to your local disk, then open it from there?
P.S. what browser do you use?