Clover Payment Service to Shut Down

I just received this email from Clover announcing the end of their service. http://i.imgur.com/ztP7W.png

In March they had just finished a 5.8 M round. http://techcrunch.com/2012/03/08/clover-raises-5-8m-from-andreessen-horowitz-launches-as-a-one-click-mobile-payments-platform/