[تم الحل] Translate Checkout messages

Background of the issue:
I am trying to translate the checkout messages on my WooCommerce site to Catalan. The site I need help with is الرابط المخفي.

Symptoms:
I can't translate the strings from WooCommerce to Catalan. They are translated in the string translation but are displayed in English. Strings like 'Express Checkout', 'Or continue below', 'Contact information', etc.

Questions:
Why are the translated strings from WooCommerce not displaying in Catalan?