Your Bitkey app needs to be connected to the internet in order to be fully operational. If your Bitkey app is not connected to the internet or is in Airplane mode, your account balance may be out of date, you will not be able to start the recovery process, and you will be unable to initiate any send transactions. Any bitcoin that was received by your Bitkey wallet addresses while it was offline will be visible in the Bitkey app when you’re back online.