Contact Us
Last updated 12 September 2026
The help centre is the fastest way to reach us, and the only one that keeps a record you can come back to.
Support
Raise a ticket in the help centre. It reaches us straight away, your account details come with it so there is nothing to look up, and you can attach a screenshot. You will get an email when we reply, and the whole conversation stays on your account.
Cannot sign in? The button above needs an account, so use the contact form instead. It needs only an email address to reply to.
What to expect
We answer tickets within 2 working days. Payment and account access problems are treated as urgent and answered sooner.
Reporting a problem with a problem
If a problem statement is wrong, its test data looks incorrect, or a verdict seems mistaken, use the report link on that problem page. The problem comes attached to the ticket, so we land in the right place.
Security
If you believe you have found a security issue, raise a ticket and mark it urgent. Please give us a reasonable chance to fix it before telling anyone else.
Our email is sent from a no-reply address, so replying to a CodexBash message will not reach us. Use the help centre instead.