If the nozzle has become detached from the reservoir’s spout for any reason, it is possible for it to get “stuck” in the drain when you attempt to remove the reservoir. If this happens, press and hold down the RELEASE button on the keypad to open the drain valve holding onto the nozzle, and at the same time pull the nozzle up and out of the machine with your fingers or tweezers/tongs.
If you are still experiencing trouble with your LEVO you can submit a warranty claim here.