Ip Lookup service - Geolocation problems with Geoip2

Your software
My Mautic version is:
My PHP version is: 7.2.26

Hi,
I’m facing several problems with ip geolocation.

The first one is that I don’t get a feedback if the IP lookup service authentication credentials are ok or not.
I created an account with Maxmind geoip2 precision and inserted the credentials like “user:apikey” or “apikey” but I don’t know if they are accepted by the system.
The funny thing is that if I don’t write any api key I still get geolocation information in the contacts screen!
So I think that the connection is not working…so where Mautic is getting location data from?
There’s any cache system that caches Ip datas?

also facing similar issue? why is no one helping?