Same thing happened to all four of my two year growth. Very frustrating. I have Goldings, Halertauer, Sterling, and Tettnanger. They got off to a good start but got hit by worms and mildew.
I am going to baby them with fertilizer, pesticide (organic) and baking soda and neem oil. To see how they do.
I am also planting Columbus and centennial to see if some Americans will do better.
This is the set up, before they took off.