First thing I feel when seeing the homepage is there could be major typography improvements!
Staying above the fold:
The cart button takes you directly to the cart, it would be nice to have an at-a-glance / drop-down.
*Edit: I noticed this works when an item is added to the cart. Think this flow should be reconsidered.
The account icon, when clicked, the menu looks disconnected. Same with the settings icon.
Why is the setting icon, or rather the cog, being used for a currency selection? It’s a little misleading.
Moving downwards, the Category Selection doesn’t look very visually appealing at all when expanded.
Typography, in both slider and Category search is not complimenting your overall theme at all.
Is this image intended to be outside the border:
It looks a little out of place, might want to work on it some so it doesn’t appear as a mistake, but intended.
Same thing with the blog, the images look disconnected from the border, not sure if it’s intended or not?
When viewed on smaller devices, I did notice that the “back-to-top” icon is falling behind the images (z-index).
I think the biggest thing here is Typography. Almost none of it compliments the overall look and feel.
Aside from that, I don’t know what else would be the reason why it would be hard rejected. It looks great!
In fact, I really like it. It has potential!
Good luck on getting it submitted!