Rejection of Theme in Themeforest

Hello Everyone,
I have been attached with themeforest from last 1 year, I was working with HTML templates for eCommerce. Recently I have upload Opencart 3 theme but unfortunately it is hard reject by themeforest. I have already work in opencart theme before. I want to know why this happen ?

I converted my own HTML template to Opencart 3 theme, Is this meter of rejection ?
Here is the link of my opencart theme, please guide me for my next item upload.

What was the rejection message?

Thank you for your submission. We have completed our review of “Ambar - Responsive Multipurpose Opencart3 Theme” 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.