onur elveda, there were some changes in 1.7.3 Oxwall version. One of them is the new Geolocation IPs database plugin.
This plugin contains two database tables with the list of countries and IPs. As not every user need to use this tables they have been moved to the external plugin to improve the database performance. So presently you can see in description of the Advertisement plugin the reference to the Geolocation IPs database plugin. And you can use them in a pair to add geo-targeting for your ads.
So, if you upload 1.7.3 Oxwall version and need the geolocation functionality for the Advertisement plugin, just use the Geolocation IPs database plugin.