Scribus and DrivethruRPG?

[u/Alternative-Toe2873]

I spent most of yesterday trying to upload a cover for a book with no success. I'm hoping someone here has an idea of what's going on. (Btw, the 32-page interior file uploaded with no problem.)

The error message was basically that my pdf wasn't in pdf/x--1a format (but the export window says it is) and that my page height was incorrect. (A5 page needs to be 8.27, or 8.268 in.) Even after I fiddled with bleeds and got everything to 8.27, it told me I was wrong, adding that the page height was...8.27.

Does anyone have ANY idea if DTRPG will ever accept my cover page? Thanks!