Updated: June 13, 2019
RealtyPress no longer directly supports the OpenCage API.
RealtyPress v1.7.3 released on June 13th 2019 has had the open cage API removed and replaced with our new location services which are now included as part of your active license.
When you upgrade to v1.7.3 you will be automatically migrated from OpenCage. You do not have to change any settings the migration will happen after the plugin update has completed.
You can test your Geocoding after the update by visiting RealtyPress->System->Debug in your WP admin and clicking the blue “Test Geocoding” button.