Plug&Charge does not work

Hello together, I’ve had my EQE for about half a year now, and have always loaded conventionally using the Mercedes charging card or the E EnBW charging card. Last time I wanted to try out whether it is also possible with Plug and Charge, but it didn’t work, although the charging station was compatible. I activated the function in my account. Do I have to do what else to make it work? Greetings Al