Are some of your Meta (Facebook or Instagram) Catalog Ads sending users to 404 pages instead of the correct WooCommerce product?
You’re not alone. This issue is more common than it looks—and we’ve confirmed exactly why it happens and how to fix it.
Let’s break it down.
🔍 Why Do Meta Ads Lead to 404 Errors in WooCommerce?
Your product feed looks perfect. URLs work when opened directly in a browser. But when someone clicks on a Meta ad—especially on Instagram—it leads to a 404 Page Not Found.
After investigating multiple cases, we found one clear pattern:
The issue affects products with non-Latin characters (like Cyrillic) in their URLs.
🧠 What’s Causing It: Double-Encoding of Cyrillic URLs
Here’s what happens under the hood:
- WordPress encodes non-Latin URLs once (e.g.
/мъжки-обувки/becomes /…/%D0%BC%D1%8A%D0%B6%D0%BA%D0%B8…/). - Meta’s ad delivery system sometimes encodes those URLs again, converting
%into%25. - The result is a double-encoded link that doesn’t match any real page on your site—and users hit a 404.
This behavior is not caused by your feed plugin—it’s how Meta handles certain characters in URLs.
✅ Solution: Use Latin-Only Product URLs in WooCommerce
The fix is simple: use Latin characters for your product slugs, so Meta can’t break your links.
You can do this in two ways:
🔧 Option 1: Manually Change Product Slugs
If you only have a few products, edit the slug (URL) for each one in your WooCommerce dashboard and replace non-Latin characters with Latin ones.
🔄 Option 2: Use a Transliteration Plugin (Recommended)
If your store uses non-Latin titles (like Cyrillic or Greek) for SEO or localization, you can automatically transliterate the slugs to Latin characters using a plugin.
These tools ensure your product URLs are Meta-friendly without changing your product names.
⭐ Recommended Transliteration Plugins
1. Cyr-To-Lat
Automatically converts Cyrillic characters in product URLs to Latin equivalents. Works with posts, products, categories, and more.
🔗 https://wordpress.org/plugins/cyr2lat/
2. Cyr-To-Lat Enhanced by Webcraftic
Supports multiple alphabets (Cyrillic, Greek, Georgian). Ideal for WooCommerce, supports media filenames, and works in bulk.
🔗 https://wordpress.org/plugins/cyr3lat/
3. Slug Transliterator
Lightweight plugin that converts all non-Latin slugs using customizable rules.
🔗 https://wordpress.org/plugins/slug-transliterator/
🛠 What To Do Next
- Install one of the transliteration plugins above.
- Apply it to your existing product slugs (most plugins let you retroactively change URLs).
- Regenerate your feed using PixelYourSite’s Product Catalog Feed for WooCommerce.
- Resubmit the feed to Meta.
- Test ad clicks from Facebook and Instagram to confirm everything works.
✅ Your Feed Is Not the Problem
PixelYourSite’s feed plugin already generates correctly encoded product URLs.
The issue comes from Meta’s internal processing of links with non-Latin characters. Fix the slugs—and you fix the problem.
🔚 Final Thoughts
If you’re seeing 404 errors from Meta Catalog Ads, and your product URLs use Cyrillic or other non-Latin characters, this is likely your issue.
Using Latin-only product URLs ensures that Meta won’t double-encode your links—and your ads will drive users to the correct WooCommerce product pages.