Remove Payment Workflow

I work for an educational entity and looking to use this for employee training so I don’t need to pay or have the word free display to cause confusion. Is there a gutted version of the plugin or what would be the best way to remove all of the payment stuff? I would also like for the certificate to be automatically emailed on completion. Not sure if there is a setting for that somewhere.

https://www.ads-software.com/plugins/ibeducator/