Indeed, I was able to re-create this problem on my test environment. It's a weird issue, as it's not always happening.
I'm going to investigate this closer, as I'm not sure what is causing it. The fonts are loaded correctly, yet not rendering.
Once I found the problem I'm uploading it to codecanyon, perhaps with version number 4.7.1 in the next few days.
If you like my products, don't forget to rate them on codecanyon :)