Odds are you've done something that has resulted in you getting your account blocked, either temporarily or permanently. If you feel that the block is unwarranted or unjust, contact an admin on the NIN Wiki IRC channel, or send a private message to an admin at their ETS profile. We will review your appeal and determine if the block should be overturned.
Often, we will block IPs that have been used by spam accounts. If you suspect that the IP was blocked, try logging in on another machine or with a different ISP or router. If that doesn't work, let an admin know via ETS , NIN.com, or a direct-message on Twitter and we'll try to fix the problem.