VulaCoin is a Splynx add-on which allows to purchase vouchers in HotSpot add-on via the VulaCoin payment gateway - https://www.vulacoin.com/.
Since Splynx v4.1, you can use Vulacoin add-on only in pair with Hotspot add-on to buy Hotspot vouchers. This add-on is no longer available for regular payments inside Splynx like invoice payments, refill balance, etc.
The add-on can work with various credit cards and bank accounts, payment details can be added or selected during the payment process.
¶ Installation
The add-on can be installed in two methods, via the CLI or the Web UI of your Splynx server.
To install the VulaCoin add-on via CLI, the following commands can be used:
apt-get update
apt-get install splynx-vulacoin
To install it via the Web UI:
Navigate to Config → Integrations → Add-ons:
Locate or search for the splynx-vulacoin add-on and click on the Install icon in the Actions column:
Click on the OK, confirm button to begin the installation process:
¶ Configuration
After the installation process has completed, you have to configure add-on - navigate to Config → Integrations → Modules list:
Locate or search for the splynx_vulacoin_addon add-on and click on the
(Edit) icon in the Actions column:
Main information & API settings
Make sure that Entry points option is enabled. Note that changes are not saved until you click Save.
The configuration of add-on Entry points can be found in Config → Integrations → Modules list, near the splynx_vulacoin_addon module item in Actions column, click on the 
(Edit entry points) icon. More information about Modules list can be found here.
Vulacoin credentials & Merchant details
The add-on credentials can be obtained from your VulaCoin account.
Common settings
¶ Purchase of HotSpot vouchers
Before the purchase, you might find it useful to read the following articles on the related topics: HotSpot, Prepaid vouchers and Vouchers (configuration).
Log in to HotSpot on your mobile, select a bundle and click on Buy with VulaCoin:
Enter the Amount, then click the Pay by Vulacoin button:
Choose payments options:
Then a message should appear whether the payment is successful:
Once a voucher is in use, it is possible to view the statistics in Customer's Services tab, cost of usage and detailed information of the voucher:
¶ Required Permissions
For the payment system to work properly, Splynx needs to have access to some external services. Therefore, these hosts should not be blocked by firewall rules:
Allowed URLs
vulacoin.com
*.vulacoin.com
api.ravepay.co
*.bankserv.co.za
*.cardinalcommerce.com
*.capitecbank.co.za
oppwa.com
*.absa.co.za
*.africanbank.co.za
*.bidvestbank.co.za
*.fnb.co.za
*.investec.com
*.nedbank.co.za
*.sasfin.co.za
*.standardbank.co.za
*.ubank.co.za
3dsecureprd.fnb.co.za
acs.nedsecure.co.za
*.bankserv.co.za
*.ctpe.net
ctpe.net
ppipe.net
*.ppipe.net
*.capitecbank.co.za
secure.stitch.money
eu-prod.oppwa.com