Feedback needed hard rejected WP theme

I got hard rejection after 4 hours. This is the message from reviewer:
“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.”

I’m not sure if this type of response can be related to design or coding (or both) issues.

Here is the landing demo link (check out the 5 demos inside):

Your feedback is appreciated.

Your design is too basic, you need practice more for approved themeforest, good luck regards.

Thank you, much appreciated.