You can find here few travel tips and recommendations to have a safe trip.
First of all make sure the person you are going to meet is really same person from the photos , you can verify this by a video call.
Never send any money to another member.
Meet for the first time in public place , this way you will feel safe .
Let your friends or relatives know where you are going and a contact of the person you are going to meet .
Check if your cell roaming works abroad ,and that you have enough money to come back in case of any emergency .