First, thanks for your purchase.
1: Could you share your site URL and admin info? Then we'll check in detail and provide solution quickly.
2: Are you using WPML plugin? If so, please translate all strings with WPML.
Because if you install the other translator plugin, they can be conflict each other.
If you don't use WPML, we recommend Loco translate plugin.
Please contact us without hesitation, if you have any other questions.
Best Regards, C-Themes