Our plugin doesn’t gives any list of fonts to select from. It is just a interface, from where you can upload the font and assign it. For that you need to have the font files. So it is sending you to desktop to select the font files
You can get font files from internet or from even your windows font directory. You can download/get the font you like and upload, assign it from our plugin. Using instructions using your font from windows you can check this video https://www.youtube.com/watch?v=X7YghHF0_1A
If it still doesn’t meet your requirement, please kindly send us refund request with your API key using the form here http://dineshkarki.com.np/contact and we will make the full refund to it.