I've been going through this multiple times, but I can't seem to figure out what the problem is.
Through File>File Info, I add metadata to my ebook. But once I export the ebook and view it, the metadata is nowhere to be found. The file name is used as the title and it's by "Author Unknown." The only metadata that gets exported is what I add in the publisher metadata option that appears in the export screen.
Also on this note, EPUB Validator keeps giving me a warning for OEBPS/content.opf, line 6 position 24 and the message is "title element is empty." Some searching on Google told me that this means there's no unique identifier, but I have entered one in through the export option.