meteohub.de

I have setup a chart https://www.meteoplug.com/cgi-bin/meteo ... b3a3bdbfbd

I used to be able to add &engine=js to the end of the chart address to enable Javascript rather than flash which is not supported on many platforms.
eg.
https://www.meteoplug.com/cgi-bin/meteo ... &engine=js

This does not seem to work on this chart anymore but it still works on other charts eg.

https://www.meteoplug.com/cgi-bin/meteo ... &engine=js

Is there a reason for this?
Thanks.
Brett.