Why my item has been rejected

My Item was rejected. I do not understand the issue can anyone help me?
This email was from the Envato
"
Thank you for your submission. We have completed our review of “Custom Kit Pro - Jersey, Polo T-shirt & More Sportswear Product Designer” 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.
"

It’d be better if you share your demo link

Please check the demo url
https://dev.nexovah.in/demo/customkit-pro/

admin@gmail.com
123456

Please check front & admin let me know why is rejected

Can you please help any one on it.

There’re too many similar items on CodeCanyon, WooCommerce and at WordPress plugins ( free/paid ). If you want to get the item approved, you will need to add more features along with better UI/UX

This doesn’t feel like a premium item ( haven’t checked the coding )

Thank you.
Let me improve the UI/UX then try to upload it.

It’s not the only problem, you will need better features.

Because the same feature product is already available in Envato market so you need to keep different and unique