1 : i uploaded a font from a family of 5 and i can only use the first one in a post or a page. I actually want to use another one from the family but it doesn’t show (?)
=> Have you uploaded all the 5 fonts ? If so, you should be able to select the font family from select box.
2 : the font doesn’t appear in theme appearance option (?) even if i assign the font to everything in the website.
=> Sorry here but our plugin doesn’t send the font family list in theme appearance option. You can only assign font from font assign section and from font family dropdown list in wordpress editor. However, you can assign fonts to any elements from font and assign section.
Regarding the refund, if you are not happy with our plugin, please contact us using Contact Form and we will process it.