Why does Trailhead not recognize the Door Sensor?

In the module "Create a Configurable Bundle with Options and Features

Follow Along with Trail Together", I followed the instructions AND the video.  Yet when I validate, I get the error "We can't find the 'Door Sensor' option on the 'Home Security Console' product. Check that you configured it correctly."

When looking at the Home Security Console options, you can clearly see the Door Sensor listed.  What am I doing wrong?