It's explained here: https://nullpro.net/threads/how-do-i-get-credit-and-what-are-the-differences-between-member-groups.777/
So you can get a credit if you refer someone, but ONLY if you are at least a Bronze Member yourself.
Does this include customized versions of the font, or even a customization tool?
Is there even a downloadable customization tool, or can the customization only be done interactively using the font designer's website?
I see the same issue as crystalsidee.
When clicking on, "More Information", all I get is a link to further external information. It does NOT reveal if the content is actually the free version or the pro version of a product.
It would be great to see a list of files contained in an archive file.