For IOS and Android:

• Download a client application (for example, Outline, V2Box, FoXRay, ShadowRocket)
• Generate a config.
• Copy the key and insert it to the Client application.
• In a client application, connect to the VPN server.

For Windows, MacOS, Linux:

• Download a client application (for example, Outline, V2RayA, nekoray)
• Generate a config.
• Copy the key and insert it to the Client application.
• In a client application, connect to the VPN server.