Anonymous FTP is disabled by default. You will require a Business plan or better to enable anonymous FTP.
We do not recommend using Anonymous FTP as it is a security risk. (Because it allows any person to access FTP without identifying themselves.)
I think it is on!
Simply login to cPanel and click the Anonymous FTP icon. Uncheck both boxes ("Allow anonymous access..." and "Allow anonymous upload...") and click the Save Settings button.
If you are connecting and see a 'pub' folder, then anonymous FTP is not enabled. (That folder is not on your account; it is on the server.)