I was a smoker of 38 years when I found vaping. With that much time under my belt, it took awhile before my taste buds came back. That could also be affecting how you're tasting or not tasting the juice.
Rule of thumb with any variable voltage/wattage device: start low and vape a few times. If that's not doing it for you, turn it up a little, vape some more. Repeat as necessary until you get a slight burnt taste. Then back it down a notch. That will be the sweet spot for that juice. Don't just watch the numbers, listen to your taste buds.