I bought a Tesla dongle that goes CCS -> NACS in order to use it at Electrify America or EVgo stations, and it's largely been a waste of money. EA stations are

I bought a Tesla dongle that goes CCS -> NACS in order to use it at Electrify America or EVgo stations, and it's largely been a waste of money. EA stations are usually broken or otherwise frustrating. I tried using one near San Diego a few weeks ago; there was one spot and one cable open. Great! I plugged the cable into the dongle and the dongle into the Tesla, but I couldn't start the charge. A woman who was charging nearby said that, if someone else has already started a charge with the other cable from the same machine, I can't start a charge. WTF? Isn't that why they install two cables? I tried calling EA's support line and gave up after a few minutes on hold.