Dreambox is unlocking channels by using software cams , which is in your case previously configured.yu could have played with softcam setup, or may be you did "reset factory setting" or updated the software of your dreambox so the configuration files were erased from your dreambox. this could be a possibilty, if you are sure that you didnot, may be u missed with your network setting either in your dreambox or your router , so you have to check your connectivity to the internet, try to telnet your DBox and ping
Google (google for the howto).A very common thing that the server owners suddenly made thier mind to stop providing the service, ofcourse you cant sue them as you are doing something illigal, subscription for similar services in egypt for 50$/6 months which works for me like breeze