I have saw your item it isn’t ready for premium quality standard.
reason is design quality, visual hierarchy, typographic hierarchy, spacing & alignment, unfinished design , looking copy footer.
Study and research about your build-ed category hope will approved your item.
If give some section screenshot that I will do to try fixing.
You can’t be an exclusive author and sell items on multiple marketplaces and besides this is a long way off the necessary standards for here with numerous issues with design basics
the typography is not standard and also images