Finally, I’ve managed to fix this myself.
As I’ve set the form option to false, I had to manually process the ACF fields (by checking the post variables) and update the field values using the ACF function update_field.
Eg.
if ( !empty( $_POST['acf']['field_5ecb0c4663b4r'] ) ) {
$mood = $_POST['acf']['field_5ecb0c4663b4r'];
update_field( 'field_5ecb0c4663bf7', $mood, $post_id );
}
wp_ajax_fes_submit_submission_form and wp_ajax_nopriv_fes_submit_submission_form are the hooks that handles Easy Digital Downloads – Frontend Submissions add-on‘s form submission process.
I hope this will help someone looking for a similar solution.
