Airplay says "the code is incorrect" when it isn't

Hi, I have a LG TV with Apple Airplay 2 integrated with it. When I try and mirror my screen it says "the code is incorrect" even though it's right. I have rest Wi-fi, checked that it's on the same Wi-Fi network and reset the TV. I've also doubled checked that the TV has automatic time and date and locational services.

Any help to resolve this problem?

Cheers

Paul