@amedic, the last update simplifies the settings, so there is no need anymore for an advanced toggle. All the settings are now available by default.
@lauratraveler We’ve moved the breadcrumbs settings to a new settings screen called “Search appearance”. Because of an issue in the 7.0 release, your breadcrumbs might have accidentally deactivated. You can turn them on again under Search appearance > breadcrumbs.
For more context, please read our release post. https://yoast.com/yoast-seo-7-0/
Hope this helps resolve any issue you might have!