There have been some issues with J1772 connectors. there were some free Chargepoint near me that had broken J1772 connectors. We had free high speed charging at EVgo stations for 2 years with our Leaf. I really did not see the problems with the connectors. When the station was down (which was frequent), it was usually some sort of communication issue. Sometimes 20’ on the phone with EVgo and them resetting the machine remotely worked, many times not and they put in a work order for a technician. When the machines were not working, sometimes one could see right from the station screen, but many other times it was plug in, it initiates sequence then the charge wouldn’t start or would start and then stop.