Anti theft system preventing engine from starting

More then likely we have some codes to point us in the right direction.

Below is the info about this system but we need to check for codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Let's check for codes and find out what is there. Then we need to know if the key you are using is a valid key or recently had any other issues?

Let's start with this info. Thanks