It very well could be squirrels, chipmunks, or even mice. I would try netting them or spraying with hot pepper water (but not for a few weeks before you pick the ripe fruits!).

I bought 2 at lowes, supposedly self pollinators. I guess I’ll see sooner or later

I suggest adding about 2 gallons of water per plant (slowly, so it doesn’t run off) twice a week in hot weather. Once a week in cooler weather. Continue to do this through the first 6 months, then switch to the same amount of water once a week for 6 months thereafter. By then the plants should be fully established

It may be possible that someone who lives near you has a male vine that’s cross pollinating with your female if your male vine died. Could it also be possible that you’re improperly sexing the flowers?

All hardy kiwi vines need some amount of chill hours, though some low-chill varieties exist. But, even the low-chill ones require about 100 hours of chill time. I would suggest growing fuzzy kiwis instead.