All guides

6 guides — updated for Zen Cart 2.2.2

📄 Troubleshooting
Fix the Zen Cart Blank White Page (WSOD)

Step-by-step diagnosis for the most common Zen Cart error. Covers PHP version mismatches, broken plugins, file permissions, memory limits, and how to read your error logs.

💳 Troubleshooting
Zen Cart PayPal Not Working — 7 Fixes

Covers sandbox mode left on, IPN misconfiguration, SSL certificate errors, outdated PayPal modules, missing PDT tokens, and cURL not enabled. The most complete PayPal fix guide for Zen Cart.

⬆️ Upgrade guide
How to Upgrade Zen Cart 1.5.x to 2.2.2 Safely

What breaks in the upgrade, what needs manual porting, how to back up correctly, the full staging-first process, and an honest assessment of when to DIY vs hire a professional.

🔒 Troubleshooting
Zen Cart SSL & HTTPS Mixed Content Errors

Why your Zen Cart store shows "Not Secure" even after installing an SSL certificate — and how to fix mixed content warnings, configure.php HTTPS settings, and force SSL sitewide.

🛒 Troubleshooting
Zen Cart Checkout Not Working — Diagnosis Guide

Customers stuck at the cart, session expiry issues, confirmation emails not sending, orders not recording. A full diagnostic walkthrough for every checkout failure type.

Performance
Speed Up Your Zen Cart Store — 10 Proven Steps

Caching, image compression, database optimisation, PHP OPcache, CDN setup, and hosting choices that consistently improve Zen Cart load times. With before/after benchmarks.

Quick answers

Common Zen Cart questions

📄Why is my Zen Cart blank? 💳PayPal not working ⬆️How to upgrade to 2.2.2 🔒SSL "Not Secure" warning 🛒Checkout not working Store loading slowly 📧Orders not recording in Zen Cart 🐘PHP version compatibility 🚨My store is down — help!

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