Within a meeting a chair can refuse to put a motion unless it is seconded. The point of ‘seconding’ is to establish that at least one other person wants the motion put. If nobody will second a motion the chair is entitled to think it would waste time putting the motion and the chair can dismiss the motion and move on with the agenda.
So, when an owner has wanted something on the agenda of a general meeting, our EC has wanted to see that someone is prepared to be seen to second the motion and have their name to it on the meeting papers. If so, it can go on. If not, it it is time-wasting and doesn’t go on.
Motions put on the agenda by the EC don’t need to be seconded because it is obvious that a majority of the EC supported having them on the agenda.
So, I would find someone to second your motion and go back to the EC.