Thank you for sharing your concern. And please follow the easy troubleshooting steps which might help to solve the issue.
Did you forget your Samsung Pay PIN? Don't worry, you can still get into your account. Just reset the Samsung Pay app, add your cards again, and try not to forget your PIN next time.
To reset the app, navigate to your phone's Settings. Swipe to and tap Apps, and then select Samsung Pay. Tap Force stop, and then tap Storage. Tap Clear cache, and then tap Clear data. Once these steps are completed, reopen the app, and follow the on-screen prompts. During the setup, you will need to create a new PIN and add your credit cards again.
Please follow this path to register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report).
Thank you for writing to Samsung. Warm regard, Samsung customer support
