This occurs when the Sphere Only option is enabled on the Advanced tab of the product.  In Webinfo Checklist > ECommerce Catalog, the product name will display with a red asterisk beside it (*).

To disable this option and allow the products to display on the front end:
  1. Navigate to Commerce > Ecommerce > Your Event
  2. Click on Website Info
  3. Click on ECommerce Catalog 
  4. Hover over the product name and click Edit Product
  5. Click on the Advanced tab
  6. Next to Front end vs. Back End display: unmark the box next to Sphere Only
  7. Save
  8. Navigate back to the Webinfo Checklist and Update Your Event