Problem: You are trying to delete all content for a particular language using the instructions from https://wpml.org/faq/how-to-completely-remove-a-language-from-your-site/, but the process is slow and the number of assets decreases only slightly. Solution: If the number of assets is decreasing, even slowly, it indicates that the process is working. The speed of deletion depends not on WPML but on your hosting/server resources. We recommend disabling all other plugins temporarily to see if this speeds up the process. Additionally, consider contacting your hosting provider to discuss upgrading to a more robust hosting package. Please be aware of a known issue where taxonomies are not deleted when using the 'Delete content from database' option, detailed here: https://wpml.org/errata/taxonomies-are-not-deleted-with-the-delete-content-from-database-option/.
If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have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 issues persist, please open a new support ticket.
