Hello,
Actually, under the Dashboard > Layouts > there you can find the Custom Layout created for the Single Product page enabled which is why the Theme Settings options aren’t taking effect on it.
If the Layout is enabled then the Theme Settings options don’t take effect except for the options which are global ones.
So, if you are persistent to use the Custom Layout then you need to add the Brand element in that Custom Layout and if you don’t want to use the Custom Layout then we have currently turned it off on your Site and now the Brand element shows on the Single Product page.
You can read more about the Custom Layout Builder here:
https://xtemos.com/docs-topic/single-product-page-builder/
https://xtemos.com/docs-topic/woodmart-woocommerce-layout-builder/
Best Regards.
.
