Migration away from Contentful

Hi folks, bit of a wild-card here. I’m taking over the re-development of a website currently using Contenful. I have no knowledge of this platform. The client wants to move over to a Wordpress installation. Do I need to ‘un-link’ or deactivate a setting within Contentful, before I move over to a hosting package elsewhere? I can’t ask the previous developer as they’ve gone AWOL. (I have the websites content saved and backed up).

Hope I’m making some sort of sense,
Many thanks,