We can no longer update our GeoLiteCity.dat files used for the "Listener locations map" in the control panels and widgets. Maxmind have discontinued the old GeoIP1 files. Here's the notice: https://support.maxmind.com/geolite-legacy-discontinuation-notice/ Essentially this means that as IP's get reassigned over time those map markers are going to become more inaccurate.

Is there any plan to upgrade Centovacast to use their current (and still free) GeoIP2 databases: https://dev.maxmind.com/geoip/geoip2/geolite2/

Found an answer on stack overflow in case it helps others:
https://stackoverflow.com/questions/21050456/how-to-convert-a-maxmind-mmdb-to-dat

As of February 2019, the following Python script is the best option for converting GeoIP2 MMDB format to legacy .dat format:
https://github.com/sherpya/geolite2legacy

Using this script, somebody has done the conversion and made the resulting .dat files available for download:
https://www.miyuru.lk/geoiplegacy