For External Address: enter your Bitcoin address where your coins will be sent. If you have the free version of CoinRemitter, the withdrawals are automated, usually within 30 minutes of payment.
For Webhook URL: https://yourdomain.com/whmcs/modules/gateways/callback/coinremitter.php (change yourdomain.com and the path of your whmcs installation)
Wallet Password: will go in both the WHMCS gateway setup for API Password field as well as when you create the wallet in your Coinremitter panel
Wallet Password goes in API Password field
API Key is shown in Coinremitter panel after you create the wallet
