User blog comment:Ghostheshaman/Unfairly blocked/@comment-26573805-20170418220439

Edit: It appears the problem was already resolved according to the bottom comment.

Continue reading if you're interested however:

From the Terms of Use:
 * If you choose to register for membership, in consideration of your use of the Site, you agree to maintain the security of your password and identification and to be fully responsible for all use of your account and for any actions that take place using your account.

From the Community Guidelines:
 * You are responsible for keeping your account secure. Let us know straight away if you think someone has accessed your account. If your brother gets onto your computer and vandalizes wikis, it's the account (so, you) that will be held responsible. That could lead to your account being disabled.

Please wait for a year for the block to expire and make sure to log out so your brother can't use your account or whatever.