Your Minecraft and server account security is important to us! On your next login to the CerealLand server you will need to register a password to fully login to the server. It will prompt you with instructions on what to do.
You will need to type
/register [password] [password again]
After registering the first time, on next join you simply login to the server with /login password
/register mycoolpass mycoolpass and then when rejoining