Arctic Image Size

I'll need to see the site live with the CSS applied to see if the issue.

I think it's because the featured image is in its own div, which is what the workaround solution would create.

Well, as I said, I cannot link to this site, because it is not public.

But I haven´t made any css changes, so it is the same as this https://gpsites.co/arctic/

So as I said you will most likely need one of the methods here:
https://generatepress.com/forums/topic/arctic-image-size/#post-956285

If it's easily doable, we wouldn't have provided the workaround solution :)

Yes, I read this workarounds. But these seems to me to complicated.

I have thought, that we have a misscommunication and there is an easy way to do it, But it seems like there is no easy way.

As a layman, I thought that this could not be a problem. But apparently I was wrong.

Yeah unfortunately the workaround solution is needed - shouldn't be too difficult either.