I added some nuts into the feeder and so far Josey, Agathae, and Dominica will eat from it. Josey and Dominica filled their crops, Agathae not as much though.
Felicitas and Gaby still haven't gotten as much food as I'd like from it. Felicitas just gets shove out of the way, and Gaby is scared of the feeder.
If I step on the treadle to get them to it, all except Gaby will go to eat from it, and all except Gaby and Josey are ok with stepping on the treadle themselves.
I'm excited for the second one to get here, hopefully it'll resolve the issues I'm having with the food-pecking.
Hopefully it stops the harassing, I always like to have many feeding stations. Now that it’s milder I can put the multiple water bowls out again.

