The EWS Replicator is not getting a connection to Microsoft Office 365/Exchange online.
Background
Basic authentication for EWS was retired by Microsoft on 13 October, 2020. Exchange Web Services (EWS) was introduced with support for basic authentication. Over time, OAuth 2.0 was introduced for authentication and authorization, which provides a more secure and reliable method for accessing data than basic authentication.
Since MetaDirectory version 5.0.12, we have the new Microsoft Graph Import replicator for connecting Office 365/EWS online, which can be used instead of the Microsoft EWS replicator.