[Qgis-user] zoom level / magnifier on opentopomaps print composer

[Scooter]

Dear everyone,

we have a problem with the zoom-level (also known as map magnifier) in
the print composer.

The exported png has a different zoom-level than the preview in the
print composer. It is too detailed, and some lines, like railways are
barely visible in the exported file.

We cannot find any setting where the zoom-level can be adjusted.

Qgis version: 3.8.3 -Zanzibar
Operating System: Windows 10

*wish for help*