Thanks for asking your question at Envato forum.
I think you need to improve your item item design quality, typography, visual hierarchy.
your item quality isn’t ready for themeforest.
Did you fill up this requirement
Anything else apart from this ? Can we get detailed review so we can improve in more better way?
as far I have checked the image found many spacing problem in some elements you have used more space, line height problem and also font problem. Need to include some premium design. So don’t worry just spend some more times on the market to know the quality standard. Best of luck for your next submit.