Is your card placed in your dreambox?
If not and placed in for example a Linux server, than make sure your box has update rights in your F line.
If it is placed in your dreambox, check if your card handled the ECM requests at all. Else it might be the same problem I had in the past. (channel has more than one decoding option and he gets the ECM from another card in your network. Set your prio file that your own card / caid has prio.
Other option to see if you get any updates, (quick and dirty) unplug your network cable for a while and see if your card handles the ECM requests and gets any EMM's to update. Don't forget to inform your peers as you will be offline for them.
make a quick recap.
If you get updates when you unplug the network cable and you don't get any when you are in a network, you most probably get your ECM's from another card than your own. In this case change your prio file to give prio to your own caid.
If you don't get any updates, regardless if you are in a network or stand alone, there might be a problem in your config. Maybe you have "DISABLE EMM : yes" turned on?