I Have 503 error on images where I use CDN

I Have 503 error on images where i use CDN. When I deactivate CDN it works but I want use Smush CDN and Lazy Load option for google page speed insight scor.

  • Ash
    • WordPress Hacker

    Hello Jaroslaw

    This issue may happen because of two possible reasons:

    1. Maybe a plugin conflict. Would you please proceed a conflict test? Please deactivate all plugins except Smush Pro and check if the problem gone. If so, then enable all plugins one by one and find which one is having conflict. You need to do the same with themes as well.

    You can find the flowchart here: https://premium.wpmudev.org/docs/getting-started/getting-support/#initial-troubleshooting

    2. Make sure the following IPs are not blocked by your server firewall, you may need to contact the host:

    WPMU DEV IP addresses:

    Let us know how it goes.


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