Payment plugins reject valid US and Canadian postal codes
Payment plugins reject valid postal codes at checkout, including US ZIP+4, nine-digit and Canadian alphanumeric codes, blocking orders
Tier II · Emerging Problems that are still building up.
3 public reports · first reported 17 February 2023 · last reported 23 July 2026
What's going wrong
Store owners using different payment gateways report that valid postal codes fail at the final payment step.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 3 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.