One UI Beta - Samsung Account has changed

Hi,

I recently sold my phone which was running the One UI beta and now when the person who bought the device is trying to access the beta features, he is getting an error saying
"One UI Beta features aren't available because your Samsung account has changed"

Can you please help me and get this to work with the new owner's account?

cc @USBetaModerator @USBetaModerator2 

Thanks