The universe itself works fine and reports work fine. I just can’t seem to do anything with it in Universe Design Tool. I also can’t edit the connection as I get an error when I try.
However, I’ve since discovered the option to create a new connection works. So I did that and that worked. It wouldn’t let me switch back to the original (I guess corrupt) connection. So I was forced to publish the universe with the new connection. Of course, after I adjusted the security on the new connection so people can use it.