URL Filtering license WPS (Web Protection Services License) has expired. Can't renew subscription?

Hello,

 We are using the TMG as a URL filtering proxy for our company. But the WPS license has expired and I am getting the error when I do a Category Query in TMG: "Microsoft Forefront TMG firewall Service failed to connect to the Microsoft reputation service server."

I found this article on purchasing a WPS license: blogs.technet.    com/b/isablog/archive/2010/02/02/forefront-tmg-2010-web-protection-services-licensing.aspx . But all the links to purchase the subscription are expired and don't work. Since TMG has been retired have they stopped providing licenses for the WPS service?

Or if not, where can I renew my subscription?

Thanks!