Charge Port Cover for Ampler E-Bike Rosenberger

I like my Ampler E-Bike, but the cover for the charger port is really flimsy. I therefore designed a small cap which matches the port and, like the charger, is held in place by integrated magnets. This is a first version, I am thinking of adding a revised version which somehow stays attached to the bike whilst being charged. Any ideas are are welcome! The cover should work for all Ampler Gen 2 models and also all other E-Bikes with a Rosenberger C connector.

Important: The attached print profile has a pause before layer 42 to allow for putting in two 6x3 mm magnets. Be sure to have opposite polarities when placing the magnets. Otherwise the cover will not be held in place on the bike.