Lubuntu 20.04 ARM64, Marble shows no streets, only city names as points on map

[marble]

Hi guys,

I am using a small linux arm64 handheld (odroid ultra go) with lubuntu 
20.04 and would like to navigate via marbel and offline maps. Sadly you 
can only see a very low resolution image of the earth. If you zoom 
closer, it gets a bit blurry. All cities are just dots, no streets, no 
lakes, no rivers. There is an online connection and software like 
graphhopper works fine (except you can not search for streetnames).

Downloading tiles for different levels does not work either, marble does 
simply nothing. Sadly there no console output if a start marbleqt from 
console. I don't know how to fix this, any idea? Maybe just lower / 
increase the minimum level of zoom or something?

Kind regards
Odroidguy