One person answers, by email. That is worth stating plainly rather than dressing up: it means you will get a direct answer from somebody who knows how the number was computed, and it means there is no overnight cover.
The most useful message we get. Send the page, the figure, and what you expected — a link to the venue or the transaction if you have one. Corrections come first, and if we published something wrong we say so on the page rather than quietly changing it.
Include the endpoint, roughly when, and the status code if you have one. Measured availability and latency are on the status page, including the months that miss the target.
There is no card on file and no automatic renewal, so nothing can be charged by surprise and nothing needs cancelling. Your balance, quota and deposit address are in your account and at GET /api/v1/account.
Two things account for most surprises, and both are documented rather than accidental. Every return here is what a holder earned, with deposits removed — so it will not match a vault’s account-value growth, which moves when somebody deposits. And anything held on a centralised exchange is invisible to us, so concentration and crowding are floors rather than ceilings. The methodology page defines every figure on the site.