This extension will give you a full automation system of bKash merchant (Legacy) for your WHMCS. With this extension, you can easily collect payment from a customer by submitting TrxID.
If you are looking bKash Checkout. Please see this https://marketplace.whmcs.com/product/5647-bkash-checkout-payment-gateway
The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.
Accept Bitcoin payments on your website
Easily accept Bitcoin, Ethereum and many other crypto payments on your WHMCS website
No Fees, Easy Setup. Accept cryptocurrencies like: Bitcoin, Bitcoin Cash, Ethereum and Litecoin!
With this WHMCS module, you'll get the payment gateway fees from your clients directly.
bKash Payment module. bKash is most popular mobile payment system in Bangladesh.