hinge added open as an option... anyone actually used it?

so hinge has had the ethically non monogamous filter for a while now and me and the wife thought we'd give it a proper go this month. set both profiles to enm, both have the little tag... matches are weird tbh. half the people we match with seem to think enm means single and looking for a third, the other half are vanilla folks who forgot to update their filter. anyone in the uk/ie having better luck with it? feels like the filter exists but the user base hasnt caught up...