Hmm I've never seen that error message. It says you don't create a character on that server. I'll give advice but you don't need to take it. Try making another character on a different server, and see if you can buy the ingots for that one. If that does not work try buying the ingots on the main website. If that does not help then I'd let Oasis know your struggle with the payment. Hope this helps and good luck with getting those ingots!♥

i aready check on my other server, and nothing wrong only in this server i got that problem

How unfortunate. Try contacting Oasis customer service about this. I really wish you the best, so you can get those ingots.♥

Hello,
Usually this issue occurs when a player uses special characters (anything other than the normal 26 letters) in their username. Does your username contain any of these special characters?
Please let me know, thanks!