Question about Kobo Aura 2nd Edition

P.S. For Skoobe, a reader with an open operating system is recommended. This article shows one of the possible ways:
https://allesebook.de/anleitung...
All other questions:
https://www.skoobe.de/help

I don't know, because I bought the reader as a gift and don't have it around anymore. However, a quick search on the internet revealed that it is not possible: Skoobe App requires Android or iOS as the operating system. Kobo, however, has a proprietary operating system where no apps can be installed.