TBK-WebPay is a Splynx add-on. It allows to refill balance and pay invoices via payment gateway - http://www.transbank.cl

To install Splynx-Integrapay add-on, use following commands:

apt-get update
apt-get install splynx-tbk-webpay

or you can install it from Web UI:

Config → Integrations → Add-ons:

Then first step - you should to register in http://www.transbank.cl. After that, you have to get Commercial Code on http://www.transbank.cl and set it at Config/Integrations/Modules list/splynx_addon_webpay. (And you can also set fee parameters here)

Then go to Config/Integrations/WebPay Certificates and generate self-signed certificate

After that, customers can pay their invoices and refill balances using transbank.cl system. They will see a new button To Pay as on the screenshot:

After customers will press Pay button they will have to confirm their payment:

If everything went well, you will see status of invoice as "Paid" (portal and admin):

To refill balance customers can use the link - http://yoursplynxurl/webpay/ or go to the Finance/Pay via Webpay.