Inefficiencies and lack of customer assistance priority queue

I was boarding and the hostesses called everyone and we had to line up some on the priority side and some not. Now the priority boarding sign is in the centre of the two boarding areas which doesn’t distinguish which one is priority or not. I went thru and was no 2 in the queue. The hostess check and eventually said I’m not priority and I must join the non priority queue. Wasn’t nice about it. More embarrassed me and told me to go the end of the non priority queue. Now I’m sitting and watching that there’s kovone in priority and the other line is reaching around the chairs down the aisle. One hostess is working the other one is watching here. She should have just ask that I move over to the non priority and not stand at the back of the non priority queue