Where can I get the cover that goes over the charger.
Do you mean floor mats? These cover my Charger.
Not really sure what you want to cover.
No, I mean the flap which you raise to take the plug out to charge the car
Okay - The Charger is under the floor in the front of the Twizy below the drivers feet.
The flap you want has to be obtained via a Renault Dealer. However there are fixes on this site and on You Tube on how to fix if you still have the flap and need to reattach.