why my software has been rejected

I have uploaded my first project on the codecanyon website but unfortunately this project was rejected. The rejection letter was somewhat vague and did not tell me what the reason for the rejection was. It only stated that it was not suitable for quality standards.

Please let me know what you have to do and tell me what to do to make it suitable for quality standards.

This is my project link:
http://lcams.ahmedsk.fekrait.cloud/admin

Thank you very much