In May 2021, I had worked extensively on a sequence diagram on the PlantUML demo server, which generated a URL of the form, "http://www.plantuml.com/plantuml/uml/XLFDY[...]6Fm00" ( where "[...]" => content omitted), visiting that or a similar URL frequently and editing the diagram source interactively.
Now, when I visit that URL or any other URL of the form "http://www.plantuml.com/plantuml/[...]" including the link on the PlantUML.com home page that reads "This example is working thanks to the online demo server", the page tries to load, and then appears to redirect to the PlantUML home page, "https://plantuml.com/". The interactive page with source entry and live diagram updates is not showing at all and no error message is displayed.
However, if I edit the example source on the home page, the diagram there is updated. I looked in the Internet Archive for snapshots of that page and found this, with the most recent snapshot being dated Jul 26, 2021, so if this is a malfunction, it must have happened fairly recently (within the last 2-1/2 weeks).
Is the public demo server still available? Is there a paywall I am missing? Please help get my UML editing capability back on line. Thank you.
