Hi There,
Thanks for contacting us. I will try my best to help you in this matter.
WPML partnered with several Translation service providers that offer professional translations, proofreading, and many more. Some translation service providers who offers Proofreading service is given below.
The process of connecting with the translation services is described there as well. Beside that, if you're interested to hire a reviewer to proofread your translation, you can hire one from here: https://wpml.org/translation-reviewer/
I hope it will help. Please let me know if you need any further help or clarification in this matter. I will be happy to help you.
Best Regards,
Prosenjit
This ticket is now closed. If you're a WPML client and need related help, please open a new support ticket.