I recently left my car at an airport parking location in Cincinnati with EV charging capability. They had parking places with 110 outlets for either the 5-15 (standard 110) or 5-20 plugs. I used my 5-20 adapter and was able to pull 16 amps when I left for my two week trip to Australia.
Once I arrived in Sydney, I checked on the car and found that it was no longer charging. I had a "check charger" message. I called the lot and they said they would check the breaker and connection. However, I still had the same error. This is where the amazing part comes in.
I called the lot back and asked them to go out to the car and I would walk them through troubleshooting. When the manager got to the car, I unlocked it from my phone. At which point, I heard some kids say "Wow! Cool!" apparently reacting to the door handles.
I had the manager replace the 5-20 adapter with the 5-15 adapter, and charging started back up. Apparently the circuit was not stable enough to pull the extra amps. Once the change was completed, I locked the car, and everything was fine.
The amazing part of this story is that I was able to accomplish this from a cruise ship, in the Pacific ocean in between Australia and New Caledonia!