Background of the issue:
I am trying to add products to the cart on painfree.de or painfree.se. The products are created in SE language and then translated to DE. IN is the main language site.
Symptoms:
When I try to add products in Products --> Painfree creme 30g, it gets added to the cart, but when I try to checkout, it says the product is no longer available.
Questions:
Why does the product show as no longer available during checkout?
Is there an issue with the product translation from SE to DE?
Have you had a chance to test this problem with only WPML, WooCommerce, and WooCommerce Multilingual & Multicurrency plugins?
I would also like you to try temporarily switching the URL format to Different languages in directories in WPML → Languages, scrolling to the Language URL format, and checking the results.
Before proceeding with any changes, please make sure to back up your database first.