How do I roll back to Version 6 from Pro 7?

I am not particularly happy with Pro version 7 and for me it is missing one one important feature. The option in the Recycle bin to perform an secure delete of the bin.

Beware rolling back. I tried everything that was on this site and from the Chatbot on roll back. The roll back works but the Installer for 7 will take over your PC and make CC 6 unusable. There is no way to stop the Installer from regenerating itself on your PC. It is like an uncontrollable computer virus. I am seeking my money back, but they make that impossible to find also.