Hello for all

I am new for here. two weeks ago I prepared my Mario Kart wii with wiimmfi server and I was waiting for a week to can play in this server. When I received error code 60000. I was searching a solve to register my friends code in wiimmfi. When I tried to registered it in wiimmfi.profeibe.at/ , I watched : "Sorry, it is no longer possible to enter new Friendcodes. ". I would like to know if it is possible nowadays register my friends code wii there.

Thanks for your help. I am looking forward to playing to mario kart
thanks you