Hi @wax
You can always create a field group with a repeater field in it. Then, you can add the field group to the order post type and use acf_form() instead of woocommerce_form_field() with ‘form’ option set to false in the checkout form. This page should give you more idea about it: https://www.advancedcustomfields.com/resources/acf_form/. After that, just update the repeater values by using the update_field() function.
You can get the posted repeater value like this:
$repeater_values = $_POST['acf']['field_1234567890abc'];
Where ‘field_1234567890abc’ is the field key.
I hope this makes sense 🙂
