Ghost writer

I am an active member of one of the UK national political parties. Even in California you will be aware that Sir Keir Starmer is no longer the CEO of the Labour Party. Yet every time theteam@labour.org.uk write to me I see this ghost called Sir Keir Starmer appearing as the sender in Thunderbird. I have carried out investigation. Through my originator email system I see The Team identified for those emails. These also show correctly on my Android phone. I am sick of the sight of Sir Keir Starmer. There is a new leader called Andy Burnham. You as in Firefox is ADDING SIR KEIR as an override of the originator. Something is wrong. Please investigate.