Goodbye nyjer seed!

I have plenty of goldfinches on my sunflower heart feeder, and beside it, for the past year, I have placed a nyjer feeder and refreshed it every month with new seed. Not a single goldfinch has bothered with it. They sometimes use the nyjer feeder as a place to queue up while waiting their turn on the sunflower hearts, but even then, they don’t bother to eat it. So it’s going out. I used to get lots of goldfinches on the nyjer feeders, but they seem to have gone off it. Anyone had a similar experience?

bye for now