Hey there buddy, 

Thanks for taking interest in our theme & for purchasing it, it really flatters us!

To translate the theme you need an additional plugin: https://wordpress.org/plugins/loco-translate/ , to see how to use the plugin, we advise you to watch this video: https://www.youtube.com/watch?v=ZUPhsoUm-QE&t=3s. 
This plugin might help you, if it doesn't, write to us again so we can find a more permanent solution! 

Best regards,
PixieSquad - Boris Wick