Strange code sent out as organizer in calendar invites (Caldav)

Hi I have connected a 3rd party email as default mail, also I connected via Caldav to the agenda. Now, when I plan a meeting in that agenda and send out invites, the recipient gets the invite not with my email address (and cant accept without error), as EM client sends it out via the Caldav user name (in my case “/principals/2psgnjerjw/”).

Am I missing something?

If you create the event in the CalDAV calendar, it is the CalDAV server, not eM Client, that is sending out the invitation.

You might want to ask your CalDAV provider for some assistance.