Seems like there's a glitch where fruit will get stuck in the mountain and then another where your helper snails will home in on the fruit and just stop dead. I had 6 helpers trying to get one, and they wouldn't even give me the fruit they had.
Thanks for reporting it! We did an update that should make fruit spawns more reliably fall "inside" the level, also updated colliders and helper snails have a time out to bring you fruit, just in case they still get stuck somewhere. Should be up in a minute!