Hello,
The Skoobe app version 1.3.4. works well. You should adjust the dpi under optimise and turn off the contrast support otherwise you will have black bars everywhere.
But then you can read well with it.

Greetings

Unfortunately, not satisfactory at the moment. You can install the Skoobe app from the manufacturer's website, but it runs sluggishly and unattractively (poor resolution, very annoying page changes,...). I'm now reading Skoobe again on my mobile...