Cant get SelectPdf working

Hi guys,

can somebody give me a quick basic tutorial on how to set up select pdf?
After triggering the action of creating a pdf, the page loads for about 18 seconds and after that nothing happes.

Do i have to add another action after that?

Best Regards

Do you have it on the public app?

What do you mean by that exactly?

I tried in developement mode and in live mode. Doesn´t work anyway.