Your keys are stored on your device only & are never sent to our servers. This is an extra layer of security that comes with one caveat: API key data will not be recovered/transferred/synced. However, there is no need to enter the API keys on every synced device, as the trades themselves will be synced.
PRO TIP: Once the API has been added, you will be able to see the API key and the passphrase, if applicable, but not the secret key.
PRO TIP 2: When you back up your wallet with the recovery QR code, you can learn more about this here, it will not back up the API keys.
PRO TIP 3: If you sync/transfer a portfolio to another device, the API keys will not be moved over to the new device.