[Gelöst] Custom fields in Woocommerce are not translating on the 2nd language

Background of the issue:
I am trying to translate custom fields in WooCommerce on my site versteckter Link. Specifically, I want the content of custom fields like ISBN numbers to appear on the translated version of the page.

Symptoms:
On the original page (versteckter Link), the custom fields are visible, but on the translated version (versteckter Link), the content of the custom fields is not visible.

Questions:
How do I fix the issue of custom fields not translating in WooCommerce?
Is there a specific setting in WPML that I need to adjust to ensure custom fields are translated?