Hi all: Pretty new user here. I have been trying to use qualifications in order to keep people from taking the survey multiple times. After some struggling I thought I had done so. I created a qualification, I assigned a value of "1" to everyone who had completed the HIT, and then tried a new batch with the qualification that they had to have a value "not equal to 1" in order to participate. The problem: Several hours have passed, and no one has done the HIT. Before the qualification, people did so within minutes. Have I somehow established a qualification that prevents EVERYONE from doing the HIT? I would be grateful for any advice anyone might suggest.