A. 1. Check your internet connection: Ensure you have a stable internet connection, as validation requires online access. 2. Restart the app: Close the app completely and reopen it to refresh the session. 3. Verify your pass details: Make sure the monthly pass is still valid and has not expired.

B. 4. Try validating at a different time: Sometimes, server issues can cause validation failures. Wait a few minutes and try again. 5. Use a different device: If possible, try validating your pass on another device to see if the issue persists.