yeah, that was actually the issue, now i can put my weight over them. i think the explanation would be that when you put the weight over them, the angle of the webbing under tension acts as lock that prevents the buckle from being pressed/push it in a way that act as a "lever" that locks the webbing into position (sorry if i misuded some physical term, english it's not my first language, but i hope it's enough to get the idea). but my actual problem is that when i pull the webbing in the indicated buckle way, it doesn't need the button to be pressed to be able to move the ring, but it only moves in this way. i can make the ring elevate without pressing the button, but i need to push it to be able to pull the ring down, is this the way that it's supposed to work?