pumpkins blooming but not fruiting

pumpkins blooming but not fruiting

i planted two types - jack o lantern and super sweet pie. the vines are growing like crazy and im getting tons of flowers - i guess there are two, the male with pollen and the female that will fruit. well, as the title suggests, im getting tons of flowers, but the female ends just wither away after blooming. ive even gone to trying to pollenate them myself but nothing. whats going on here?
My flowers

My flowers

Name My Plants

Name My Plants

Flowers

Flowers

For those of you in more wintry realms missing the vibrant colors of summer

For those of you in more wintry realms missing the vibrant colors of summer

Garden in early Summer.

Garden in early Summer.

Flower ID?

Flower ID?