| Error | Cause | Solution | |-------|-------|----------| | “Identity could not be verified” | Billing address mismatch | Use a different card or complete in-person verification. | | Confirmation code not working | Typo or expired code | Code expires after 30 days. Call USPS for a new one. | | No confirmation letter after 10 days | USPS never activated COA | Check status online. If pending >7 days, re-file. | | Letter says “cancelled” | Someone at old address cancelled it | You must go to a Post Office in person with ID to reinstate. |

Understanding how this confirmation works—and what to do if it doesn't arrive—is essential for a smooth transition to your new home. 1. Types of USPS Change of Address Confirmations