Thank you for contacting WPML support. While you are waiting for one of my colleagues to take this ticket and work on it, let me provide you with first debugging steps or if I can perhaps help with the issue quickly.
That happens because WooCommerce doesn't recognize Austrian German. Please make sure to have a full website backup and follow the steps below:
- Visit this page hidden link
- Download the .mo file, following this step-by-step: https://woocommerce.com/document/woocommerce-localization/#downloading-translations-from-translate-wordpress-org-manually
- Rename it to "woocommerce-de_AT.mo" (or the correspondent default locale you're using for the Austrian German language)
- Now get access to your website files and go to the wp-content/languages/plugins/ folder
- Paste there the file you just downloaded and renamed
- Go to WPML -> Themes and Plugins localization
- Check the " WPML has detected changed or new MO files" warning, and scan all the files
It should be solved after this. Please give it a try and let us know how it goes.
If that does not help, one of my colleagues will soon come to continue support.
