It is impossible for NapBots to withdraw funds from your Exchange.
This is why the API keys you provide to connect the trading robots to your account must not have withdrawal rights, so no funds can be withdrawn from your account. Also, your key is encrypted; once they are connected to NapBots, we have no vision on it.
Finally, NapBots is only an exchange interface between our bots and your Exchange. Therefore, no funds from your Exchange are located nor used directly on NapBots.