This is 100% an electrical issue and not fuel related. I was recently at a gas pump and my fuel door wouldn't pop open. After manually trying for over 5 minutes, I got in the car and moved it to a spot in front of the store instead of sitting at the pump. When I got out to try it again, the fuel door worked like there was never a problem. I was sure the electrical issues were over when I sold my 2005 Elise for this nearly 20 year newer car...but nah.