frankyn

Problem:
You are trying to use WPML with WooCommerce to translate the 'add a coupon' string on your site, but WPML is unable to retrieve this string from WooCommerce despite multiple attempts to scan plugins and themes.
Solution:
This is a known issue which was reported here:https://wpml.org/errata/woocommerce-multilingual-cart-page-strings-not-translated-when-using-blocks/

1. Currently, WooCommerce Blocks are not fully compatible with WPML, which might be causing the issue with string retrieval. We recommend using traditional WooCommerce shortcodes instead.
2. Replace the WooCommerce Blocks on your cart page with the following shortcode in a Shortcode Block:

[woocommerce_cart]

3. Set this new page as your WooCommerce Cart page.
4. Attempt to locate and translate the cart's strings using WPML > String Translation.
5. For further details on using WooCommerce shortcodes, you can visit WooCommerce Shortcodes Documentation.
6. If you are using a custom language, ensure that it is supported or consider using a standard language code.

If this solution does not resolve your issue or seems irrelevant due to updates or differences in your case, 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 needed, please open a new support ticket at WPML Support Forum for further assistance.