http://jo-pol.github.io/DiBL/grounds/
Clears the message "loading script, please wait... " after a while, but nothing else happens, at least not for a while.
Mobile devices might need a long time (dozens of seconds) to render the complex SVG diagrams. A Flanders or 2x2 pair diagram will be the fastest to try and see if it works at all.
If no diagram appears after a very long time, please report the circumstances, it might be more than a performance issue.