I've designed several flyers and specifically chose the A5 size (148 x 210 mm). When working on the project there seems to be no way to check the size (no rulers?). I can click on "resize" and the system tells me that I am still working on an A5 sized design. But after downloading, the size has changed to 1748 x 2840. I've tried many times and it's always the same. How can I get an A5 size?