Microsoft has stopped the support of EWS connection with basic authentification (login and password), they sent to the administrator of your email box many emails since April 2022 to alert you it will be stopped.


Now you have to add new account in Automatic Email Manager with your email address, it will detect an O365 account and ask you for the Microsoft authentification (if not the case contact us), fill it, then it will work as expected. (don't forget to delete old account when it works).


See also: Use a shared email box >


Important: If you are using Windows server, make sure you installed Microsoft Edge or Chrome instead of default Internet Explorer (IE), because Microsoft doesn't support anymore IE for authentification.