Founder, WP Fix Stack
Stefan runs WP Fix Stack and personally tests every fix published here on real WordPress installs before it's written up — from Elementor and plugin conflicts to Cloudflare edge rules and aaPanel/Nginx server configuration. Every guide reflects issues he's actually reproduced and resolved, not summarized from someone else's post.
Getting 'Updating failed: The response is not a valid JSON response' in the WordPress editor? Here's how to find the Cloudflare rule blocking it and the fix.
aaPanel's Let's Encrypt certificate stuck, expired, or failing to renew? Here's exactly why it happens on WordPress sites and the safe step-by-step fix.
Old domain still showing up after an All-in-One WP Migration import? Here's why Find & Replace misses some URLs, and how to safely clean up the rest with WP-CLI.
AVIF uploads to WordPress showing no generated thumbnails? It's almost always your server's PHP image library (GD vs Imagick) lacking AVIF support.
Stuck in a Cloudflare Managed Challenge loop on wp-login.php or wp-admin? Here's why it happens and the exact settings to fix it without disabling security.
Cloudflare deprecated Page Rules and your WordPress HTTPS or www redirect stopped working. Here's how to find the old rule and rebuild it as a Redirect Rule.
Duplicator package build frozen or showing a Host Build Interrupt error? Here's the exact order to fix it: database export mode, ZipArchive, then PHP limits.
Elementor breaking on GeneratePress? Fix the three most common conflicts: WooCommerce widget clashes, mobile scroll bugs, and blog layout overrides.
Elementor editor stuck loading or blank in Firefox but fine in Chrome? Open DevTools, enable Disable Cache, and hard refresh to fix it.
Elementor slider or carousel broken only on mobile? It's likely still built on the old Section structure — here's how to convert it to a Flexbox Container.
Elementor pages lost their styling after moving to a new host or domain? Regenerate Elementor's CSS, confirm the site URL updated fully, and check CSS Print Method.
Elementor editor showing a white screen on your aaPanel-hosted WordPress site? Raise memory_limit and max_execution_time safely from aaPanel's PHP settings tab.
WooCommerce products, portfolio items, or other custom post types 404ing after a permalink change? Here's how to fix it without breaking other pages.
WordPress showing a 500 Internal Server Error on aaPanel? Check the right logs first, then fix the four causes that actually cause it, in the safest order.
WordPress admin login keeps redirecting back to wp-login.php? Here's how to tell if Cloudflare Turnstile, Bot Fight Mode, or your SSL mode is the cause.
White screen or 'There has been a critical error' right after upgrading to PHP 8.1? Revert PHP first, then find the exact plugin causing it with WP_DEBUG_LOG.
Every page 404s after changing your WordPress permalink structure? Here's the Apache fix, the Nginx fix, and how to tell which server you're on.
Gutenberg won't save, or an app integration fails, on an aaPanel site? aaPanel's firewall/WAF may be blocking /wp-json/ requests — here's how to check and fix it.
High TTFB on aaPanel WordPress hosting despite LiteSpeed Cache? It's usually PHP-FPM pool limits or two caching layers fighting each other. Here's the fix.
Stuck in an infinite WordPress login redirect after a Cloudflare Turnstile update? Here's the Wordfence two-factor conflict causing it and how to fix or unlock it.
WordPress stuck in a redirect loop after putting Cloudflare in front of aaPanel? It's almost always mismatched SSL modes — here's the exact 3-step fix.
Site stuck showing 'Briefly unavailable for scheduled maintenance' after an update? Here's how to safely delete the .maintenance file and confirm nothing broke.
White screen right after changing PHP versions in aaPanel? Revert first, then find the real cause: a missing extension or an incompatible plugin.
WPvivid restore hanging at a percentage or failing outright? Here's how to tell which of the four real causes you're hitting, and the exact fix for each.
Live chat widgets like Tawk.to or Crisp can wreck your INP score. Here's how to delay the widget's script until real user interaction, without losing chat.
Scheduled WordPress backups can silently stop running for weeks on low-traffic sites. Here's how to verify your last real backup and fix wp-cron for good.