[Theme: Pure] – gallery/portfolio problem, featured image showing up

Hi all!

First of all, apologies for being a newbie and asking a newbie question. ??

I have a problem with the “Pure” – theme designed by gt3themes: https://www.gt3themes.com/wordpress-themes/pure/

I want my page to look like the demo linked above, the thumbnails leading to pages where several images are displayed to the left, like this: https://www.gt3themes.com/wordpress-themes/pure/portfolio/pellentesque-enim-lorem/

I’ve come so far as to get the thumbnails right on my page (using the “portfolio” in wordpress): https://www.evawerner.se/?page_id=128

But, if you clic the thumbnails it doesnt look nica at all: https://www.evawerner.se/?port=portfolio-item1

The problem is that the “featured image” (which can only be one in the “portfolio”) appears to the left, where I want more than one image…

If you have any clue about what I am doing wrong, I would be very grateful for your help!