There are two ways to use the product.
Free. Full functionality is available on a real account, but data arrives with a small delay. Free access is tied to your device. It’s enough to evaluate the product and work with slightly delayed data.
With a key. A key removes the delay — you get the freshest data — and works on any account. Enter the key in the service field InpApiKey or directly in the indicator panel.
Buy a key on the Pricing page; it arrives by email and is shown on the page right after payment.