Genre Misidentification Woes

I'm concerned that my indie-published epic fantasy book is too easily misidentified as a YA fantasy. Twice I've had acquaintances say they'd like to buy it for their (teen) son or daughter based on my brief summary or the book description.

Then after submitting it for a thoroughly objective (and admittedly free) review, it was rated poorly, even though it was described as "beautifully written." But the reviewer felt it was not fast or action-oriented enough for young adult readers. (!) I even submitted the book under the epic fantasy genre, but the reviewer plainly stated in the review it was for young adults because the protagonists were all young. This is not actually true; there is only one protagonist and she grows to adulthood in the book--even so should this be an absolute indication that it is geared for a YA audience?

I'm getting a little concerned in marketing the book that it is giving the wrong impressions about its genre. It's possibly hurting my reviews (and perhaps eventual sales) because its not being read by the target audience. Should something be more obviously stated in my pitch or cover blurb that it isn't for young adults? That doesn't seem at all right, but I'm wondering how I can make sure anyone seeing or hearing about the book doesn't assume it's aimed at a young audience.

I think you may all be right. I'm considering how to rework the cover art into a more conventional portrait and style, perhaps even a scene. I purposely left the main (young) protagonist out of the picture to avoid making it look too YA, but I agree the vector illustration art may still be giving that impression. The web site probably isn't helping either. I just need to rethink the whole design, see if I can un-YA-ify it. . . .Maybe even the description.

It's probably going to take a lot of time but you are all probably right.

Thanks everyone for your advice.