somehow skydemon shows mainly names of very small towns but does not show names of larger towns. is there a setting i have messed up that can fix that?

here is an exmaple.. look at the town "Turbenthal" which is a quite small town, and compare it to "Neubrunn" which is basically a collection of about 20 houses. I would expect SkyDemon to show me the name of Turbenthal rather than Neubrunn, but it does the opposit. When i make a call to a local airfield and i tell them i am overhead Neubrunn nobody knows where i'm at, but when i tell them i am overhead turbenthal, people understand. This is true both in flight planning mode and in navigation in flight. any idea what i did wrong?

here is a comparison of the skydemon screenshot (zoomed all the way in to show these two towns with maximum detail) compared to a map that depicts every building in the town as a black rectangle.



Skydemon knows Turbenthal, i pops up as a result when i search for the name and its area is shown on the map. Pleasae help me in getting my settings right. 

EDIT: when i switch off "Urban Areas" in the surface features settings, Turbenthal is completely hidden, it doesn't even get a yellow dot.

EDIT2: this is with skydemon 3.6.2 on a google nexus 6p

regards
Pascal