Hi can anyone help me please because I am not understanding this
Security precautions are a necessary part of any marketplace, and at Envato, they take account security very seriously. While the process of locking accounts can be frustrating, their aim is to protect you and provide a safe online experience for their community at large.
If you have been locked out, then you need to follow the link in your email to contact support because they are the only ones that can help you:
Make sure you choose My Account in the first dropdown, then My Account is Locked.