SOS! I tried to submit my first WordPress theme and it was rejected!

Hello Guys, today Today I got the bad news about my theme was hard rejected and I have no feedback :S

*Unfortunately your submission Eduka - Education & University WordPress Theme isn’t ready for ThemeForest 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:

Can you give me some feedback? What could be problem?

This is the demo site