[nicholasjstock]

Check at the log tab and the tex tab, the tex tab is the tex file compiled after templating and the log is the output generated by pdflatex. In the log you should see an error. Likely you Tex file contents ins't properly understood by the system

[soult]

The log tab says error, but it still displays a PDF. Actually, it displays the last PDF that was rendered on the server, even if that PDF was created by a different user.

[nicholasjstock]

yeah I have to fix that render bug in the example implementation. The try this uses the same API_KEY for every client. In real life you wouldn't be seeing other peoples PDFs