I checked his family page and it surprised me to see it hasn't got a lot of gold. I guess it's because of what Draco Tanos says, since he's been for a long time a non-landed Noble. I guess I'll give him a couple of days or so to reply to the last warn and then he'll get banned for his refusal to reply to requests or orders, as Geronous says.
Thank you for your replies!
