I've recently updated to windows 11 and downloaded the latest version of Thunderbird. For the past few days, I'm told that emails are downloading but nothing shows up in my inbox. I can still view my latest emails via webmail but not with thunderbird. I've contacted my provider and they believe the problem lies with thunderbird and not optus. I've also unistalled and then reinstalled thunderbird and the same problem remains. Can you please help? thanks, Rosetta