This thread is resolved. Here is a description of the problem and solution.
Breadcrumbs' link to product categories is not working.
The product categories' terms ( for example, "all-3d-models") should be translated. And the translation shouldn't be the same as the default language. Otherwise, a 404 page for this category term will occur. This is a known issue that we explain here. https://wpml.org/errata/translated-term-slug-identical-to-the-original-term-slug/ This a WordPress limitation. Please translate the terms and then it should work.
This is the technical support forum for WPML - the multilingual WordPress plugin.
Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.
Please make sure to update to WPML to the latest and check our list of Known Issues before reporting