Hello, @Heather,
Single product builder allows adding 2 custom tabs. But if it’s not suitable for you and you want to use the third-party plugin you need additional customization to make our theme compatible with the plugin. In our documentation, you can check how to make the theme compatible with one of such plugins https://xstore.helpscoutdocs.com/article/106-support-of-the-custom-product-tabs-for-woocommerce-yikes-inc
Regards 8Themes Team.
