Indesign item rejected. Why?

Hi, I need your help to figure out the rejection reason for my submission. I’ve submitted this indesign template and I’ve got this reply:

“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.”

I don’t know if the problem can come with the preview or with the indesing file itself…

hi the preview is too small for me to see in details what u have created and thus so that i can tell you how i feel about it …

Here is a hi-res preview. Thank you!