I'm unsure of what exactly the problem is but I'm using a FTB server and I downloaded everything and got the "minecraft server" jar to load up and when I put in the ip address and connect to the server it says that it's vanilla minecraft and when i go into it it's not in the "stoneblock" world and instead in a vanilla minecraft world with grass and trees and shit. The only step that I haven't done that could maybe be an issue is going to my routers admin page bc I can't get in to it for some weird reason (no one changed the admin password but the one on the router doesn't work) so i'm not sure if that affects whether the server will be stoneblock or vanilla. Please let me know what my big dumb brain is doing wrong and thank you in advance.