Redirect ports through cloudflare for remote support site

The site currently working, I need a network expert with, a deep understanding of NGINX, and Cloudflare. Must also understand web app, client software, web.config files.
Connect wise Control is the product also known as screen connect. It is hosted on a windows server which I am the administrator for. https://docs.connectwise.com/ConnectWise_Control_Documentation/On-premises