Support » Plugin: Shift8 CDN » Unknown Error Detected, Test URL before enabling :

  • Resolved John Kim


    Dear support,
    we have Shift8 CDN installed and used it for a while. All of the sudden, it indicates unknown error in testing under Core Setting. And we can’t purge cache. Below is the debug info. Thank you so much !

    Shift8 CDN Debug Info
    WordPress Version: 5.7
    Current WordPress Theme: Virtue version 3.4.4
    Theme Author: Kadence WP -
    Theme URI:
    PHP Version: 7.4.11
    Active Plugins:
    Antispam Bee (2.9.4)
    Asset CleanUp: Page Speed Booster (
    Classic Editor (1.6)
    Duplicate Page (4.3)
    Kadence Blocks – Gutenberg Blocks for Page Builder Features (1.10.5)
    McAfee SECURE (1.9.1)
    Ninja Forms (3.5.1)
    Plugins Garbage Collector (Database Cleanup) (0.12)
    Product GTIN (EAN, UPC, ISBN) for WooCommerce (1.1.1)
    Rank Math SEO (
    Really Simple SSL (4.0.11)
    Redirection (5.0.1)
    Shift8 CDN (1.53)
    ShiftNav - Responsive Mobile Menu (
    Simple Social Buttons (3.2.1)
    Site Kit by Google (1.27.0)
    SiteOrigin CSS (1.2.13)
    Smush (3.8.3)
    Stripe For WooCommerce (3.2.14)
    The Paste (1.0.7)
    Virtue/Ascend/Pinnacle Toolkit (4.9.6)
    WooCommerce (5.1.0)
    WooCommerce PayPal Checkout Gateway (2.1.1)
    WP-Optimize - Clean, Compress, Cache (3.1.8)
    WP Rocket (3.8.6)
    Yoast SEO (15.9.2)

    The page I need help with: [log in to see the link]

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  • Plugin Author shift8



    Looks like the site , in our dashboard , was deleted and re-created on March 10th. Can you confirm you are using the most current API key and CDN Prefix (and the exact cut/paste of site url)?

    I would say try that first or at least confirm its identical with whats on our dashboard site.


    Plugin Author shift8


    Closing this issue – feel free to respond if you have more info. I’m always here to help!

Viewing 2 replies - 1 through 2 (of 2 total)
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