Edition downgraded???

Edition downgraded???

Suddenly I was unable to perform any tasks from the Professional Edition account. 
Then I looked into the new "Other editions" tab that appeared in the menu and to my surprise I see thatI have been downgraded!
I am subscribed to and regularly paying for. The last invoiced email shows as the next renewal date 07/06/2013
This is very serious. What it's happening?
Please can anyone get back to me asap?