You have to spend over 3000 credits which is about $1000 to get an email contact. But then its likely that the person you are typing to isn't who you think it is. Stay away and dont use.

The sites carefully delete all attempts to exchange phone numbers, email addresses, and/or other account data.

Answer is you can't. It's a scam. Go local, as hard as it is they are playing on your feelings and making you think these beautiful women really want to get out of the Ukraine. Who knows maybe some do. These girls are paid to do pictures to entice you in. I asked one which dentist she worked in but just kept replying 'A private one''. Scammer