You weren't banned or kicked. Your IP was blocked by Sentinel, Sentinel blocks IP's when an account is caught cheating on it. You can't appeal this, you just have to wait out the duration of the IP block. I suggest you read
this to get yourself better acquainted with blocked connections. Just know this, if in the future you have a blocked connections and your error code starts with a "C" it means that Sentinel blocked you from connecting to the server. If your error code starts with "V" it means that your connection is not supported because of a suspicious IP. This type of blocked connection is typically caused by the usage of a VPN.