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Fixes we actually ran.

We pull the weeds out of WordPress, Cloudflare and GoHighLevel. Every problem is reproduced on our own server, fixed, and shown to you before and after.

Fresh from the server 22 Oct 2026

ERR_CACHE_MISS and “Confirm Form Resubmission”: why Back breaks after a form, and the fix

Tested on A separate test nginx on our DigitalOcean droplet (Ubuntu 24.04) with PHP-FPM, and Chrome on a MacBook

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Tested ERR_EMPTY ERR_EMPTY_RESPONSE from a WordPress site on nginx Tested 522 Cloudflare can't reach your server after you lock down the firewall Tested NXDOMAIN DNS_PROBE_FINISHED_NXDOMAIN after moving nameservers to Cloudflare Tested ERR_QUIC ERR_QUIC_PROTOCOL_ERROR on a site behind Cloudflare Sprouting soon A2P rejected GoHighLevel A2P 10DLC registration keeps getting rejected

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How we grow a fix

  1. 1 Break it first We reproduce the problem on our own droplet behind a Cloudflare zone we control.
  2. 2 Measure before and after Every guide shows the result we measured, with versions and the date.
  3. 3 Show how to undo it Each fix has a check that it worked and a way back.
  4. 4 Re-run when it changes When a vendor changes something, we test again and log it in the guide.
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