Please ensure you have entered an API key in the plugin settings page.
To find your API key scroll down to the API key section on this page: https://dashboard.accredible.com/issuer/dashboard/department/api-settings
It looks like this:
Your Accredible account does not have any Groups. Please create a Group before trying to create Credentials: https://dashboard.accredible.com/issuer/dashboard/groups
'; echo 'To create new digital certificates or open badges:
To update certificate or badge appearance or to create a new group visit: https://dashboard.accredible.com/issuer/dashboard/
You are automatically issuing credentials when a student completes a course. To disable this, please amend your settings.'; } ?>