--- title: "8x8 Contact Center Custom Integration Shows Missing or Blank Boxes" slug: "8x8-contact-center-custom-integration-shows-missing-or-blank-boxes" updated: 2026-05-05T09:01:44Z published: 2026-05-21T21:26:15Z canonical: "help.8x8.com/8x8-contact-center-custom-integration-shows-missing-or-blank-boxes" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.8x8.com/llms.txt > Use this file to discover all available pages before exploring further. # 8x8 Contact Center Custom Integration Shows Missing or Blank Boxes ## Symptom When using your custom 8x8 Contact Center integration, it's showing missing or blank boxes. ## Applies To - 8x8 Contact Center Integrations ## Resolution Check your browser security settings to ensure the following sites are allowed: - https://cloud8.8x8.com - https://vcc-naXX.8x8.com (XX = your tenant location) ## Cause The necessary sites are blocked by browser permissions.