Yerba Mate

I'm using some rosamonte yerba I found on amazon, I hope that isn't the problem. I tried swelling the leaves for longer and longed and actually let them swell for 24 hours, and i get the same exact problem. When I pour the water in, the montanita simply collapses. I tried pouring in different ways, on the hole, on the yerba, by letting the water run down the bombilla, upright and tilted, and the montanita collapses. I also tried various different temps, from 0C to 80C.