What's the most confusing thing an SEO tool has ever told you?

We're launching ValueTheWebsite tomorrow, a website audit that explains every issue in plain English instead of SEO jargon.

While building it, the hardest part was rewriting warnings like "render-blocking resources" or "missing canonical tag" so a small business owner actually understands what's wrong and why it matters.

What's the most confusing message an SEO or speed tool has ever shown you? I'd love to make sure our report explains it clearly.