Anyone have any ideas?
Is the Submit button one you added to the file, or is it a part of the application itself?
OK, that should be fine, then. In what application is the file being opened, exactly?
Can you share the actual file with us?
You can attach it to the original message using the tiny paperclip icon at the bottom when you edit it, or upload it to a file-sharing website (like Dropbox, Google Drive, Adobe Cloud, etc.), generate a share link and then post it here.