Need help. Backgrounds pack hard rejected.

I’ve got hard reject on these backgrounds. https://www.behance.net/gallery/30006137/Landscapes
Can anybody tell me what’s a problem?

I think they look lovely. They’ll usually give you a clue in the rejection email… nothing?

Nothing was the. Only standard message: "Unfortunately your submission Landscape ­backgrounds isn’t ready for GraphicRiver­ and cannot be resubmitted as it did not­ meet our minimum requirements for quali­ty and/or Envato Market policies. In ord­er for submissions to be considered for sale they must be of high aesthetic and ­technical quality, unique to our library­ and cannot be in violation of Envato’s ­policies.

Regrettably the Help and Quality Teams ­are unable to offer a critique or feedba­ck on your rejected submission.

Please see our Help Center for more inf­ormation: https://help.market.envato.com/hc/en-us/­articles/204067134 "
So, I can’t understand what’s a problem with that.

It’s a shame, I think they’re nice and would be great as generic, yet themed, backgrounds for flyers, posters etc. I’m not a reviewer unfortunately, and I’m definitely not a ‘graphic design illustration wizard’, so maybe I’m missing something.

Do you think reviewers may appear here to explain that decision?

I like them, but I’m no graphics expert.

really wonderful creations ! beautiful and unique, maybe they judge commeciality is not good enough but as for me i am wandering if u did not upload in the wrong category because i don’t how this could be rejected