The charging port is affixed with a nut inside. Best would be to open the deck and re-tighten the nut. Silicone will work as well from the outside but may just be a temporary solution. In order to open the deck, just the flush-mounted screws on top of the deck. From there you can access the charging port and you will probably see the nut hanging loose over the cable.
See videos:
And:
https://drive.google.com/file/d/1G3bFwOZ_uyevk-Tc3UYnaiT-ocOLKhRu/view?usp=