I belong to a guild on Bonechewer-cluster where the guild lead does all the Naxx stuff. I can give you the discord but not here, wsp me if you need it. But not sure a crafter can do cross-server unless in same guild. Not sure if T3 is soulbound or BOE either.
If it’s not soulbound can have a alt join the guild and have it crafted that way, then put in the warbank for your main.