Designs are denied if they don't follow the rules. Common reasons include:
Using copyrighted or AI-generated content.
Being traced or heavily referenced from another artist's work.
Poor quality (blurry, messy outlines, stray pixels).
Violating PG-13 guidelines (e.g., excessive gore, nudity).
Being named or categorized incorrectly.
Read the feedback provided on the rejection. If you're still confused, contact Creator support for more clarification.