Hi @Burtiraven,
can you be a bit more specific what app you are using? There’re a few unofficial apps out there.
Based on your other posts I assume you want to use this one? If that’s the case I think you need to download and install lql-api. There are instructions in the README but I wouldn’t recommend installing that thirdparty software in a production environment.
The URL you provided is a mobile view of the normal checkmk application. Not everything is included in that UI but I does the job of checking checkmk on your phone.
Hope this helps. 
Norm