Hi, I was using your demo at http://demo.joomlathat.com/index.php

I created Invoice # 2017-0017. I sent the email to myself via the component, and I received it. When I clicked on the link in the email (in a new browser that was not logged into the demo site), I arrived at a completely blank page. I tried the link in two different browsers. Here is the link that was generated in the email:
http://demo.joomlathat.com/index.php?option=com_invoices&view=payment&id=37

Please advise. Your software looks nice, but I am concerned that it doesn't work.