Nice photos! Photo #2 tells it all, it's wired wrong
Green is correct as is RED but the BLACK should go to the other verticle pin, not the middle neutral pin!
Personally I'd just move it and also remove the middle pin(neutral) that the black wire is going to now, it's just not needed.
Just to verify, your EVSE does say it's capable of 240v? I'm sure it is but if for chance it says 120v only and you rewire it the way I'm saying......well lets just saying by rewiring it you WILL be putting 240v to the EVSE, just want to make sure it's truly a 240v EVSE
You could go through the hassle of mailing it back to China but truthfully it will probably only take you a few minutes to rewire it and it will be as good as new, it would take you more time to drive to the PO to mail it, kind of bad someone didn't know how to wire it though
Of course they don't use the 14-50 outlet in China but it's still kind of unforgivable they made that kind of mistake!