Geolocation via DBIP / GeoIP 2 giving wrong country for Single IP

we’re currently running matomo to track manual mail campaigns therefore i use pixeltracking in the mails and MTM in all of the websites.
The problem now is the geolocation.
All trackings coming out of our office in Germany are shown as Lisbon Portugal.
I have DBIP /GeoIP2 enabled.
When I connect to the admin site and test the connection in the geolocation settings it is displayed correctly.
In all trackings coming from this IP the location is shown wrong.
I have the location database set to be downloaded from the default link.

I have not yet enable the ISP Database Option.