I feel so much better knowing it isn't just me! As it steeps I get more flavor, but still not grape. It's definitely my tongue.
It's definitely not just you. I haven't tried Grape Ape or Queen of Hearts specifically, but I've tried quite a few other fruit vapes including Betlegeuse. Maybe we're just oversensitive to certain flavors in eliquids. I have a very keen sense of tastes with actual food but something about fruit eliquids isn't simpatico with my tongue.
So far the only fruit eliquid flavor I've found that I can taste properly is pineapple. That doesn't mean all fruit eliquids taste bad to me, although many do, they just DO NOT taste anything like their descriptions or how my friends describe them if we vape them together. Now, Bedrock is spot on, but I don't taste any real fruits, only the cereal candy and milk... and it's overpoweringly strong, but pretty awesome none the less. I need to cut it with some unflavored eliquid. Popular Orange Cream vapes taste kind of like Orange Clean furniture polish to me. Very unfortunate but I know it's not the liquids. Seems like straight banana vapes are some of the worst offenders, but Banana Nut Bread eliquids work beautifully.
Have you had any pineapple eliquids like Malibu, or Pina Colada type flavors? Those work just fine for me. I'd like to know your experience with them, if possible.