The Ashtkoot guna milan matching is 15 which is below 18 that is considered for marriage. There also is Nadi dosha as both belong to Adya nadi. This dosh is formed when you score 0 out of 8 points for Nadi in ashtkoot guna milan as per vedic astrology. This dosh is related to children and marriage is not recommended if there is nadi dosha.
You may read more about NADI Dosha in the link below