[Gelöst] Problem with woocommerce product filter in each language (apart basic)

Background of the issue:
I had to restore the database because during yesterday's support work many translations in the Swiss version disappeared. Now I want to repeat all the steps according to the instructions, but it does not solve the problem.

https://wpml.org/forums/topic/problem-with-woocommerce-product-filter-in-each-language-apart-basic/

Screencast: versteckter Link

Symptoms:
Problem with WooCommerce product filter in each language apart from the basic language.

Questions:
How can I fix the WooCommerce product filter issue in each language apart from the basic language?
Why did the translations in the Swiss version disappear after the support work?
What steps should I follow to correctly restore the database and translations?