Top up your balance. You can do this by clicking "Manage Subscription" on the dashboard or in the settings, or by visiting this link.

Login with your TorBox email. It will send you an email containing a login code. Once you recieve this code in your email inbox, input it and click "Continue".

Here on the main screen, click "Top-up Balance" and pick the amount to top-up.

Next pay with whatever currency you want. We would recommend PayPal.

Once your purchase has gone through, you will now have a usable balance on your account. To use this while paying, click "Login" on the window in the bottom left, and login using your TorBox email. Like before, you will receive an email containing a code.

Once you are logged in, it will show your balance by clicking on your avatar in the bottom right.

Now it will allow you to pay using your topped up balance.