Need API for Data Import Add-on

[janicef23]

I paid for the plugin, created an account on your site, uploaded the plugin to my site. I am unable to locate the required API for the data import add-on. It's not in my account. I see the license number and another number that is not the API.
Steps:
I installed the add-on. Selected import. I go to a screen that requires an API to activate the plugin.
Please advise.