How to Display New Blog Templates For Registered User

Hello, I have placed New Blog Templates on my home page, where New User can select the template and register a new site. It's working perfectly for a new user, but what if a registered user wants to create the onother site? When the logged-in user clicks on "Select Template" button nothing happens. I've created a MemberShip page with an option to create a site, but there is now way to desplay and select site template.
Please advise. Thank you.