I have an issue which seems kind of weird. Since Friday I have received more than 50% of my visits from one specific city (Frankfurt am Main, Germany).
However we do not advertise in this area and before Friday we have had zero visits from Frankfurt. We have also explicity removed the city and the area around it from our ads.
Furthermore I have setup Google Analytics just to check whether this might be an error from our side, however in google analytics the cities are displayed correctly.
Any ideas how to fix this or where to have a look?