If you use filelink and you save your password into Thunderbird when you change your nextcloud password, Thunderbird don't ask you to update the saved password. It just get an authentification failed into options >>> attachments >>> nextclou provider account.
If you use filelink and you save your password into Thunderbird when you change your nextcloud password, Thunderbird don't ask you to update the saved password. It just get an authentification failed into options >>> attachments >>> nextclou provider account.