[Plugin Woocommerce] Add To Cart Variable Not Showing

This is making me absolutely crazy!

A few moments ago i have done a complete fresh install into wordpress, installed only the theme “Retro” and Woocommerce, the first thing i do is make a “test” variable product and i cant get the “Add To Cart” button to show, i have all the info filled in correctly to make it variable and nothing shows.

The “Add To Cart” shows on a simple product and works fine.

I really don’t understand what the problem is, i have looked through threads after threads about adding things to functions.php and so on, i have tried that previously before this fresh install and nothing, surely there is a fix!?

I dont understand any errors if they appear as everything is fresh installed and updated peoperly.

The website:
https://sprintprintuk.co.uk

The product test:
https://sprintprintuk.co.uk/?product=test

The Theme:
https://themeforest.net/item/retro-premium-vintage-wordpress-theme/5075763?WT.ac=search_thumb&WT.seg_1=search_thumb&WT.z_author=olegnax