To deposit Naira into your Nairadirect account you must be logged-in to your account. Upon successful login, follow these few steps to deposit money into your Nairadirect account.
From your dashboard click on Bitcoin Wallet
From your the drop down menu click on Receive BTC
Copy the bitcoin wallet address to send the amount of bitcoin you want to deposit

Note: Upon confirmation, your wallet will be credited with the amount you have deposited and the bitcoin address will be updated immediately after use, with a new one generated.