Audi Connect - Not recognising Sim

I wonder if anyone can shed any light on an issue I’ve had. I bought an EE preloaded data sim, activated it on a phone, yet when I insert it in the glovebox the car is not even acknowledging the sim is there. It’s fully inserted ‘clicked’ in place.

if I got to the Audi connect section on the MMI I can’t get past the first screen of ‘Insert a sim with data’. I’ve reset the MMI to no joy.

Has anyone had any similar issues thatthey managed to sort out?

Thanks