How to join your Arma 3 Server
Log in to the Kinetic Panel and head to the overview page.
You will see a Connection Address, which is your server's IP Address.From the main menu, click on the "Multiplayer" option and select the server browser
In the Multiplayer menu, look for the "Direct Connect" button and click it.
Paste or type the server's IP address into the input field.
Click the "Join" button to join the server.