I've got an RMA label but before I ship it back I wanted to check to see if there was a known issue and fix for this sort of thing? When it freezes, input stops and if the leds are on an animated setting it freezes too. Unplug and replug recovers it. Sometimes the keyboard seems to reset itself. Most mornings it'll be back on the default lighting.
I guess Drop doesn't have tech support. They just created an RMA.