Originally posted by Old Boy Is it possible to pay a joining fee for some other player using only their 'opponent name' 😛
Yes. Somewhere in the registration process, entering the credit card info and such, you are asked for whom you want to pay. Your own user name is default. Change this name to the person you want to pay for.
Disclaimer: If I'm wrong, don't blame me. I hope some other member will confirm my answer.