I didn’t know that it uses wifi per default but reverts to ppp if that’s the only option available.
I tried that and it works.
However, the datarate is super slow (which is perfect for what I need).
But my first way to try was to use remote VNC, and that failed due to slow datarate.
Later, I connected a screen, and realized the data does flow through ppp.
Thanks a lot for the support!