Q1: No, the "2 free connections" means you could have 2 connections to their server (yeah, openvpn.net actually have a business to sell the OpenVPN servers) for free as a test trial before you buy their service. You could have as many as you wish connections on your own server (as long as the hardware has enough resources).
Q2: Purevpn is actually a commerce VPN provider that provides OpenVPN connection service (they buy their server, and you just use it), but OpenVPN is open-sourced, we are talking about how to build your own server for yourself. Here is an article you might be interested in to solve your problem. (Short answer, no, but you can make one personal OpenVPN server to solve it).
https://forums.openvpn.net/viewtopic.php?t=21535