This thread is resolved. Here is a description of the problem and solution.
Problem:
If you're experiencing issues with the stock status not being translated in WooCommerce when using WPML, it might be due to the strings being custom coded without a registered text domain.
Solution:
We recommend asking your developer to add text domains to these strings. Once that's done, you can use WPML's String Translation to translate them. For more details on how to register strings with a text domain, please visit https://wpml.org/documentation/support/how-to-use-gettext/
To learn how to use WPML's String Translation, check out https://wpml.org/documentation/getting-started-guide/string-translation/
If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If you still need assistance, please open a new support ticket at WPML support forum.
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This topic is split from https://wpml.org/forums/topic/woocommerce-translations-not-showing-correctly-account-cart-checkout-language-switcher-issues/