Published Gantt does not display on mobile device dashboard



I created a Dashboard that pulls in a published (Read Only - Full) Gantt chart. When I view the dashboard on my iPad it does not display the Gantt, however. Instead of the Gantt it displays a link (see picture). The dashboard displays fine on my laptop. Is there a mobile app setting, browser setting or some other setting that I must change so it will display?

Thanx for the help,