Thank you for contacting WPML support. While you are waiting for one of my colleagues to take this ticket and work on it, let me provide you with the first debugging steps and try to help with the issue quickly.
1) How is this page / slug being created? Via some plugin or? Since I do not see it in regular WooCommerce endpoints.
2) All regular WooCommerce endpoints can be translated from WooCommerce Multilingual & Multicurrency > Store URLs.