The app connects to our VPN servers via the OpenVPN (SSL) protocol which provides the best in network encryption and provides additional configuration options not available with IKEv2, L2TP or PPTP.
By default, the app will connect through the UDP 1194 port / protocol.
The other selections are UDP 4096 ES, for the highest possible encryption available for our servers and the TCP connections, which just provide some different options in the event that you are having difficulty connecting via the default UDP protocol.
To make these changes, you can refer to the steps listed in the knowledge base article linked below:
If you have further queries, please email us at firstname.lastname@example.org, and we'll try our best to assist you.