Most lost sales don't announce themselves. There's no error message, no angry email — just a visitor who tried, hit friction, and left. Here are seven of the most common silent problems we find, and why each one matters.
1. A checkout that fails on mobile
Over half your traffic is probably on a phone. If a payment button is hard to tap or a form field zooms awkwardly, people abandon. You'd never see it on your desktop.
2. A contact form that doesn't actually send
Forms break quietly — a bad plugin update, an expired integration — and you only find out when someone complains they "reached out weeks ago."
3. Slow-loading pages
Every extra second of load time costs conversions. Shoppers won't wait, and search engines rank you lower for it.
4. Broken links
A "page not found" in the middle of a buying journey kills trust instantly.
5. Images that don't load
A missing product photo makes a real store look abandoned.
6. Text that's unreadable on small screens
If people have to pinch and zoom to read your pricing, most won't bother.
7. Confusing navigation
If a visitor can't find what they came for in a few seconds, they leave.
None of these show up unless someone checks — deliberately, on real devices. That's exactly what a QA audit is for: finding the quiet problems before they cost you another customer.