Header images issue

Hi,
i’ve been using tiny hestia since few years and today i’m getting into a strange error.

I imported years ago 6/7 images for the header and it always worked showing ’em in random order. Today i see the images shown are taken directely from my posts… ??

I looked in the theme’s settings and the “right” images i’ve imported years ago are still there at their right place. So i left just one and saved. Nothing changes.

I didn’t touch any settings in the database or in wordpress, i didn’t upgraded wordpress or PHP, i’ve just updated the theme yesterday or two days ago.

Is there anything i can do to fix it?

The page I need help with: [log in to see the link]