Hi
I had the same last year not sure why, so not much help but you are not on your own

Probably need pollinating. The female flowers have baby squashes behind the flowers, while the male flowers just have thin stems. Take a Q-tip or brush and gather some pollen from the male flowers, and dust the middle of the female flowers with it, preferably on a different plant. Hopefully, you will start getting squashes--it will be a race with frost for them to ripen, though!