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Merchant Troubleshooting Guide: Gateways, SMS Deliverability & DNS

September 9, 2026


Rapid Diagnostic Guide for Operational Glitches

When operational irregularities occur, systemic issues can generally be remediated within minutes using the verified diagnostic steps below.

1. Orders Settle at Bank but Show "Pending" in Admin

  • Likely Cause: Callback URL misconfiguration or network firewall blocks intercepting asynchronous gateway webhooks.
  • Resolution: Verify within your merchant banking portal that the callback URL corresponds precisely to https://yourdomain.com/checkout/callback.

2. Transactional SMS Alerts Failing for Select Customers

  • Likely Cause: Buyer cellular carriers maintain proactive marketing message blocklists on the destination phone number.
  • Resolution: Migrate your outgoing dispatch configuration to pattern-based transactional lines, which bypass cellular blocklists.

3. Custom Domain Connected but Throws SSL Insecurity Warnings

  • Likely Cause: Global DNS propagation delays for newly updated A and CNAME records (typically requiring 15 minutes to 4 hours).
  • Resolution: Ensure the domain points accurately to the designated Webito IP. Webito's automated certificate bot issues and attaches the SSL certificate automatically once propagation validates.

4. Maximizing Storefront Image Rendering Speeds

  • Webito automatically optimizes incoming media uploads by transcoding raw photography into lightweight modern WebP formats and serving them via regional edge caching.