Missing translations for WPML

Hello!
I have a multi language website and it seems some things are not translatable, they must be hardcoded are not working:
– ‘has selected a’ on the email sent to the friend we offer the gift to
– To, Send To and Enter your note here are not translatable. I found some text in the String translation that have those text, but even if I translate them they wont come up on the front end.

You can check this page:
http://www.fitntasty.ch/produit/bon-cadeau-pour-une-cure-detox-2/

Thanks for your help,
W

https://wordpress.org/plugins/gift-cards-for-woocommerce/