From their website: “We work hard to develop and support these themes, therefore the only limitation is that you are not free to resell or redistribute…”
This is from the license file included in every theme.
This theme or plugin is comprised of two parts.
(1) the PHP code and integrated HTML are licensed under the General Public
License (GPL). You will find a copy of the GPL in the same directory as this
(2) All other parts, but not limited to the CSS code, images, and design are
licensed according to the license purchased from Envato.