If you have any questions about this plugins usage and configuration you need to contact plugin developers for help, we does not have any relations to this plugins and can't offer support for its usage.
Please note that by Themeforest marketplace licenses rules you need to purchase additional regular theme license for every language used on your website, because multi-language website considered as multi-site (even if you use another languages in the same domain or in folders), this described in Theme Documentation. For example if your site have two languages English and Deutsch you need to purchase 2 regular theme licenses at total).
Every language on site considered as another website (because it have separate content in another language and may have even completely different content and settings) and this means theme used twice. By license rules you need to have separate regular license for every website where theme used (in folder, sub-domain, separate domain, etc).
This rules apply to all themes from Themeforest marketplace (not just our) even if this not stated in theme description page.