I used the J1772 adapter every day for about 6 to 7 months after which it intermittently would not communicate with the car or charger, I'm not sure which but the car would just say "charge port open". Another month later it would not work at all. Tesla said they could not duplicate the problem so I had to buy my own replacement adapter. It worked fine for another 6-7 months and now it's starting again. Has anyone else had this problem?