CONTACT

Contact.

We are a small team and we read every message. Replies usually take a day or two.

Help with a server
Tell us the server's name and what its page says. Writing from your account's address lets us look straight away.
Billing
Most changes are quickest from the billing page. For anything else, write with the email on the invoice.
Report a challenge
Send the challenge's library address and what is wrong with it.
Security
If you found a vulnerability, put "Security" in the subject and give us a chance to fix it before you publish anything.