Logon to CMS (/admin) and goto the location - /xml_content/layer7/Passwords/password_tooltip_key.xml
The file contained:
<?xml version="1.0" encoding="utf-8"?>
Change it to the following:
<?xml version="1.0" encoding="utf-8"?><Password/>
-Save and Publish the file.
-Goto Dashboard > Site Settings > Password Policies.
-Click "Save Changes".
-Logout, and try to register a new user, password rules should be displayed in the tool tip.