Which two reasons could prevent a newly created Storefront category from being visible on the site?

The visibility of a newly created Storefront category can indeed be affected by several factors, and one of the most critical reasons is that the category being offline will prevent it from being displayed on the site. When a category is offline, it is not available for customers to view, regardless of whether it is properly configured or contains products. This means that setting the category status to online is essential for it to become part of the customer-facing site.

In addition, if the category does not contain available products, it may lead to an empty view when accessing it, which could deter customers from exploring that particular category. However, the category itself might still be active and visible; it just wouldn't showcase any products.

Similarly, if the storefront catalog is offline, all categories, including newly created ones, would also be hidden from view. Thus, both options mentioned here relate directly to the operational status of the category and catalog.

Regarding sorting, while a category may indeed need to be sorted for organized viewing, not having a sort order does not inherently prevent it from being visible. Categories can still be online and sorted by default; visibility is only truly impacted by their online status.