Periodic Unit Cell-Plugin on Knowledge Base

Dear All, 

I have been trying to simulate the mechanical response of periodic structure using a unit cell. I came to know there is an Abaqus plugin available on Knowledge Base, which can help me in this direction. Unfortunately, I am unable to access the Knowledge Base since the past few weeks, and I am not sure what the reason is. Is the knowledge base available only to a particular set of users?

Please let me know if you have any knowledge about this.