Ho to translate Super Socializer GDPR Compliant?

Hi,

I have tried to translate the string of GDPR compliant:

I agree to my personal data being stored and used as per Privacy Policy

by inserting the above string into PO file and translated it; then uploaded to Super Socializer plugins folder and also /wp-content/languages/plugins/

But no translation is made on front end.

How can I translate it?

Cheers
Daro

The page I need help with: [log in to see the link]