Automated VPN service for our customers

We want to set up an automated VPN fulfilment service where our customers can purchase a dedicated IP address with their VPN. The flow. Customer will pick a service VPN package Customer will pay for that service The order will be processed Customer will receive a kill switch software (open source software will be fine). The VPN will be set up automatically from scratch with a new IP address (no user will be on the same IP address as another). Customer will receive their VPN details It is a subscription-based VPN and will automatically renew every month, if payment fails we will retry over one week and then put the VPN on hold e.g customer cannot use VPN until they renew the subscription (this will last for a total of 1 month until the VPN is deleted). We would like to use WordPress for the website and can happily supply and set up the WordPress website ourselves with the payment integrate we would like someone to create the automated VPN.