Cannot enable DroboApps


I’ve recently picked up an old DroboShare from a customer who no longer wanted it. I am using the device on my LAN with no issues (bar the painfully slow transfer times to and from the drobo) but I seem unable to enable the apps feature. I have ticked the box (and changed the workgroup name whcih doesn’t work either) restarted the Droboshare but it is still unticked and no joy when looking for the droboapps folder. What should I do?

Thanks in advance