In order for the message "Bread Crumbs" to go away, cookies need to be enabled in your browser. 

For example on Safari:

Go to settings --> Safari -->Block Cookies --> Allow from Websites I visit.

Also, Javascript (not Java) needs to be enabled

For example on the iPad. Go to settings, Safari —> advanced —>Javascript.

Have your students updated the system software on their iPads?

Also, you  MUST NOT be in Private or Incognito mode.  This will disable your cookies!