[Закрытые] Product attributes are broke

Background of the issue:
I am trying to ensure that all of our product attributes remain in English. One month ago, I noticed that some of our product attributes were appearing in French or Deutch, even though they were originally in English. I attempted to resolve this by disabling all plugins, but it did not help. The issue can be seen on this page: скрытая ссылка.

Symptoms:
Some product attributes are appearing in French or Deutch instead of English. I expected to see normal product attributes, but instead, I got nonsense in product information.

Questions:
Why are some product attributes appearing in French or Deutch instead of English?
How can I ensure that all product attributes remain in English?