Support

Write to a person who can actually fix it

There is no ticket robot and no tier one. Messages go to the people who build this, and you get a reply, usually the same day.

You might get an answer faster here

Sizing, fees, leverage and what the calculator assumes are all answered on the features page.

What a key may carry, what is refused outright and how keys are stored is written out in full.

Invoices, payment method and cancelling are all self-service inside your account, at any hour.

The more precisely you describe what happened, the shorter the exchange that follows.