My first project was rejected, can any on tell me anything needs to be improved, very thanks

I just received the reject reason by email today, and it show “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.”.
And now I am starting redesign another template to try next time. Please someone tell me what the problem on my template, and anything that I can improve. Thank you.
Here is the demo link:

The execution is not bad but it’s a bit basic in terms of features, versatility, options, functionality (bear in mind this is a stock marketplace and not an ‘end product’)

If you add more to it and develop it (properly) then you should be able to resubmit it.

Thanks for your reply, I will keep in mind, and modify the template that you mentioned then try to resubmit it again.