When I download my artwork as a PDF, my text that is written at a curve does not download as it appears on my Express artboard and is misaligned with my artwork.
I've been trying to recreate the issue you are seeing, but haven't quite got it yet. Can you share some more details about how the curved text in Express is constructed? I screenshot of the editor with the text selected could help. Or if you are willing to share the document with us, I can get the engineering team to look for a solution (DM me for an email address to share with).