Board Thread:Support Requests - Getting Technical/@comment-35510217-20180929173328/@comment-1038387-20180929190128

Staff does not intervene in local bans. Admins can block for whatever reason they see fit. You can contact the admin that blocked you on their wall here on Community Central and ask for them to change their mind. However, they don't have to unblock you; they don't even have to reply. You're going to have to accept that answer, so make sure you're polite and non-confrontational.

See this blog for more info:
 * User blog:Sannse/How to Get Unblocked