eCatcher and multiple vpn connections

Can I have 18 open VPN connections if I buy the eCatcher Pro version?
Need to collect data with KEPserverEX OPC client.
I suppose it is not possible without having VPN open in eCatcher?

So with eCatcher, you need to have the application running and connected. If you want to have a bunch of Flexys always connected to the same network using OpenVPN, we recommend getting a Netgate router like this or run your own OpenVPN server and connect it to all of the Flexys.