The girl: 28/06/1980, 9:00 am, Istanbul/Turkey
The boy: 13/01/1986, 22:30 pm, Duisburg/Germany
Looks like there is Nadi Dosha. I don’t know if this can be cancelled. Is this marriage is recommendable?
The Guna milan score is 19.5 out of 36, you need minimum 18 for having marriage. Therefore the your relationship is little above average that should be. As the boy belongs to Shatabhishak Nakshatra and the Girl belongs to Moola Nakshatra there is Adya Nadi dosha. Nadi dosha is never good in horoscope matching.
You can read more about Nadi dosha on this website.