My First Laravel Project Was Not Approved. What is your advice?

Hello friends,

After a long effort, I made a Room Rental software and uploaded it to the system. But unfortunately, it was tested 1 hour after the upload and it became a Hard Reject. They said that I could not send this product again.

I really did not understand what the problem was and your ideas are very important to me.

Here is the demo : Rent a Room

Thank you.