[Đã giải quyết] Variation price synchronization problem in WooCommerce Multilingual

Contexte de la question:
I am trying to change the price of a product variation in French (primary language) and automatically synchronize this change in the English version (secondary language). Link to a page where the issue can be seen: liên kết ẩn

Symptômes:
The variation price is not automatically updated in the English version. The input field for modifying the price in English is grayed out, making it impossible to make any changes.

Questions:
Why is the variation price not automatically updated in the English version?
Why is the input field for modifying the price in English grayed out?