Objective: This study investigates the impact of e-payment platform reputation, e-customer support, and app navigation ease on e-payment experience, engagement, and advocacy in Indonesia's digital economy. Theoretical Framework: We address the gap in understanding these factors' effect on digital payment advocacy by employing a quantitative design and surveying 360 participants, using structural equation modeling (SEM). Method: Using SEM, we analyze survey data from 360 participants to examine the relationships between e-payment platform reputation, e-customer support, app navigation ease, e-payment experience, engagement, and digital payment advocacy. Results and Conclusion: App navigation ease, e-customer support, e-payment engagement, and experience significantly impact digital payment advocacy, providing guidance for policymakers to improve user trust and enhance digital transactions in the digital economy. Implications of the Research: The findings offer valuable insights for policymakers and platform providers aiming to enhance the digital payment landscape in Indonesia. Originality/Value: This research provides a comprehensive perspective on user behavior and attitudes toward digital payments, offering potential implications for stakeholders in the digital economy.