(New User) Pb Display Category/posts between desktop/mobile

Hello community!
I have been banging my head on a problem. Here is what i want to do:
I have a welcome category which contains 5 “getting started posts”, and i want either to have none of them displayed on the main page of the mobile version, or only the first one.
For some reason, the 2nd post is displayed on mobile and i don’t know why.
I have tried to make the first post a sticky, fiddled with a bunch of category options, i just don’t get why there is a difference here between desktop and mobile!

Hope someone can bring the light… :star_struck:

I have still haven’t found what i’m looking for :microphone: