Do you have a demo available?

Not really a demo url, but I developed the plugin for a swedish youth organisation (Salt). They do not have it in production yet but you can see it at this url https://salt2.efs.nu/?page_id=1377

Best regards
//Samuel

Are there any help files, instructions, samples, etc.?

There where some notes on how to use the short code under Other Notes but I have now added a bit more on styling and tempting there too which I think is the harder parts.

Hope that the new information will be helpful, If you have more specific questions I′m happy to answer them.

Best Regards
//Samuel

I′ll mark this as resolved.

Best Regards
//Samuel Erdtman

and again