This case study details K&N's experience following the migration of their e-commerce site to Magento 2 in 2019, which led to significant challenges, including a 96% shipping issue rate for international customers and a 64% failure rate in coupon code conversions. To address these issues, K&N conducted a comprehensive audit of their site, identifying root causes of revenue leakage. With limited resources, the company sought a tool to assist in this analysis and chose Webeyez. The implementation of Webeyez allowed K&N's DevOps team to collaborate more effectively with marketing and e-commerce teams, providing a single source of truth for site performance. As a result, K&N recovered over a third of their lost revenue in Q3 of 2022, resolving issues related to international shipping and coupon codes. The case study illustrates the importance of utilizing analytical tools to enhance e-commerce operations and improve customer experience.