use the forum search before you open a new Thread to questions that have already answered in many other Threads.
Hi, There are a large variety of reasons that cause a rejection of your work. I would be making a blind guess, one, because you do not show us your actual submitted/rejected work and also because even seeing the work might not let us find the correct error which caused the rejection. As v.poth stated you would be better served if you do your search of the information provided for contributors on Adobe Stock guidelines for newcomers. Wish you well. JH