You need to post a picture of yourself on the bike. From the side, seated on the saddle, pedal at the lowest position.

Absent a picture, I think the Kona Dew Plus looks like a sloping top tube commuter bike. You should definitely have plenty of standover height on a bike like that, unless you have unusual proportions.

I know many say standover height is unnecessary, I disagree. Not everyone is an expert rider, not everyone rides in control all the time. In traffic, surprised by a darting pedestrian or swerving car, sudden lurching stop, off balance, you may well end up with both feet on the ground and the top tube in your nuts.