I think what that package of documents says is that he wasn't in fact served until February. Point of the argument was to get him served before he because President because if you don't get him served until after he is President, the rules about what you can force him to do in response are different.
Service of Process is a legal act--you have a statute which says "here is how you serve process on this person"--question is when you did the acts that comply. Lawyers and process servers then file the piece of paper--but that is why you have arguments including this one--argument is that the legal act that was done wasn't sufficient.
In this case, that is what the judge held. Reason why is best set out in the early WND article--the lawyer didn't get the process server to do it in a manner which complied with the statute.
Bump
It was very nice of the judge to allow proper service yesterday. He didn’t have to do that.