I am using Ceon 2.0.0 with Zen Cart 1.3.9d.

According to https://www.zen-cart.com/tutorials/index.php?article=67 "NOTE: You should never collect CVV data if you are manually processing credit card orders, as having that information is a violation of terms of service with credit card companies."

However, the Ceon module does collect CVV data and there doesn't appear to be any option to turn this off.