I installed the plugins that arrived via email, in particular I installed the Hits plugin, very nice, it was what I was looking for. The first time I activated the Hits, all the flags of the countries appeared with the IP in succession. But in the top list there is not a flag but the words "(invalid ip address)" in its place.
After a few hours I noticed that all the IPs that appeared in the hits statistics were preceded by the words (invalid ip address) and are normal Italian IPs (clicking on the IP opens the IP description page via the external service).
In particular in the top list there is my IP:
http://geolocation.php-web-statistik.de/index.php?lang=en&address=151.38.43.196that is a regular IP.
Here the image of the situation:
It seems that the installation of the paid plugins has corrupted some file or I have inadvertently checked some flag which has caused this behaviour.
What can I do?