After having problems with uninstalling the old version, I uninstalled the old version using Windows 11/Settings/Apps. It showed both the old and new eM Client versions, so I uninstalled the old one. The new version starts as a brand-new install and I get a “server found but authentication failed” error message when trying to add my Exchange email account. The old version handled this account perfectly.
Outlook handles the Exchange just fine of course.
Any help on this would be most appreciated.
This issue has been resolved.