Tell me please what exactly is the problem?

I received a letter with the following text:

Thank you for your submission. We have completed our review of “CryptoTheme - Crypto Currency Template” and unfortunately we found it isn’t at the quality standard required to move forward, and you won’t be able to re-submit this item again.
We appreciate the effort and time you’ve put into creating your item. And we’d be happy to help make sure your next entry will meet our submission requirements. Here’s our advice:
Visit our forums and ask fellow authors for feedback. Our helpful community will be glad to lend a hand.

Tell me please what exactly is the problem? What needs to be fixed?
My demo

With respect if I think only your design then I would like to say good but when about themforest standard then would like to say you have used small amount if elements very less simple page content. section to section padding is not consistent. Look like just a template structure. for getting approve you have to provide unique aesthetics design with best UI and have to put some premium design.

Thank you very much!