there again, We have multi lingual site

Hi there again,

We have multi lingual site http://www.bournhall-clinic.ae in English and Arabic. We are using Qtranslate-x plugin for multilingual site. Our arabic site is at http://www.bournhall-clinic.ae/ar/.

In the popup pro we are able to translate everything from the popup contents except one thing. It is "Never see this message again". How can we translate this message from english to arabic?

Looking forward to your prompt response

Thanks & Regards
Mohannad