If a seller asks you to transfer money via Moneygram, there is a possibility that they are trying to scam you. These fraudsters might even send you an email and label this payment service as OLX Buy Protection. Some are brave enough to say that the product will be delivered by a third-party courier service. Below is an example of such an email.
Take note that OLX doesn't offer any 3rd-party payment or delivery services. Stay sharp, stick to cash and rather meet face-to-face in a public space. Please report these cases immediately to us.