I am running cracked minecraft. I downloaded the server jar from Minecraft.net, and ran the server. My friend can join, but whenever I try, it say's Bad Login. Please help, I can't join my own server hosted by myself. I turned whitelist on and put myself ont he white list, I put online-mode=true, but it still doesn't work. I tried joining my friend's server, same message, and he did the same thing as I did. My friend is running premium Minecraft, but we played on the server a few day's back and it worked without any problems. I am using Hamatchi.
I know this sounds like a stupid question and I may appear as a retard, but me and my friend have searched online for answers and we can't find help.