Rewrite a function to show first pic as thumb

Here’s my solution: https://wordpress.pastebin.com/uTPVTyEq

When you add this code into your single.php (in the loop), it will show all images uploaded into gallery for that post . . .
<?php echo do_shortcode("[gallery]"); ?>
– or –
To show only the first image this plugin is great and up to date. . .
Get The Image Plugin

Hope this helps

Thanks Michael, but its still showing the last pic uploaded… Check the post on my site https://www.holten-motorsport.no/wp

Hmmm, What happens if you change 'orderby' => 'menu_order', to 'orderby' => 'post_date',

Woho! Seems to work! I will try making a new post as well to test it out, thanks for fast reply Michael!

No problem!

I did work out! Again, thank you very much! ??