Nope, the graphs don't work and don't know why.
When I posted you had an error message where the graph should be, which said "Can't find JpGraph directory" or something similar. If you are trying to use @broadstairs' wxgraphs the path is specified in line 20 of graphsconf.php. This is mine:
$jploc = "{$WEBROOT}/jpgraph-4.4.2/src/"; //must have trailing slash