Hello,
Welcome to Microsoft Q&A!
From the store page, I noticed that you have uploaded trailers for your app. Have you provided the 16:9 Super hero art image for the trailers? Based on the document - App screenshots, images, and trailers: Trailers are short videos that give customers a way to see your product in action, so they can get a better understanding of what it’s like. They are shown at the top of your app's Store listing (as long as you include a 16:9 Super hero art image).
Besides, Microsoft Q&A doesn't support questions about app submissions in the store. Please ask questions in Publishing windows app forum.
Thank you.