So that I don’t see my friend on the world map nor can invite to the group.
Strange fact is that he can invite me but I get invitation only in Xbox app, not in MSFS2020.
Strange, isn’t it?
Check your settings on the xbox app( even if you have pc) and you must be on the same server.
The thing is I don’t have such a problem with other friends. Could be a region thing?
Confirm with your friend, their settings and they are on the same server.