So I've had my CPO Roadster for just over 2 weeks. It was supposed to come with a UMC, but I've been told they're backordered until late September. So, I grabbed on off eBay, but I sadly think I got a bum unit. I'm tried the UMC on a 240V L6-50 outlet, which has been successfully charging the Roadster with a 30 amp Blink EVSE with a J1772 adapter. I know the outlet is good. When I plugin the UMC, the green light just blinks repeatedly. It never goes solid. I plug it into the Roadster charging port, which is lit white, and nothing happens. When I press the reset button, the fault light comes on, and then goes out when I release the reset button and the flashing green light continues. I read the manual, but it makes no mention of a flashing green light. Anyone have any ideas?