Contact
Found a bug, or got a result that looks wrong? Tell us.
What happens next
This is a small site, so replies come from a person rather than a helpdesk — usually within a few days. The email address is the one field we genuinely need: without it there is no way to answer you, and a bug report we cannot ask a follow-up question about is often a bug we cannot fix.
If you are writing to have your message deleted, say so and we will remove the row.
Before you write about a wrong result
A surprising number of “the test is broken” reports turn out to be the mouse, which is the whole reason the diagnostic tools exist. If a click score suddenly dropped, run the double click test first — a gap under 70ms means the switch is bouncing, not that the counter is miscounting.
If the number still looks wrong after that, tell us what you saw and what you expected. Those are the useful reports.