Drobo 5c does not wake up after computer restart

I updated my Drobo 5c to firmware 4.1.1 since then, after every computer restart, I have to manually shutdown and restart Drobo unit using the toggle button at the back for my computer to recognise it again. Drobo also goes to sleep after few days even if my computer has been switched on, so its not helpful if I am away and need to access files remotely. These issues only started after updating the firmware. Does anyone else have these issues? It was working perfectly before the firmware update. ANy solutions other than going back to old firmware?