Cannot get breadcrumbs to show in GP Premium Theme

The Insert Script to Head Field is not part of the Hook Element - it must be from another plugin.
Move the code from there and place it in the Text area below that.

Okay, I tried that but now some symbols appear where the breadcrumbs should, the following>

> ','

' ); } ?>

Have you checked Execute PHP in the Hook Element ?

I just checked it and now it works, thanks for your patience! There is a big gap between the title and the breadcrumbs though, do you know how I could get rid of it? e.g. on this page: https://www.thefieryvegetarian.com/easy-vegan-garlic-bread-recipe/

Glad to hear that !

Try adding this CSS to remove the breadcrumbs bottom margin:

.entry-header #breadcrumbs {
    margin-bottom: 0;
}

that did it, brilliant, thanks!

Glad we could be of help.