Problem: You are inquiring when WPML will be compatible with WooCommerce's High Performance Order Storage (HPOS). Solution: We have conducted tests and initially planned the integration for a later version. It is likely to be included in WooCommerce Multilingual 5.2. We will update you once a release date is set. Additionally, this compatibility issue has been addressed in a recent release. If you're experiencing this issue, we recommend checking if you have the latest version installed. If the problem persists or if this solution is not applicable to your case, please visit our support forum to open a new ticket. We also highly recommend visiting the known issues page to verify the version of the permanent fix and confirm that you have installed the latest versions of themes and plugins.
