Hello Operators.
Here is a guide on how to install and verify your ACRE installation

1. Subscribe to the ACRE mod on the steam workshop | Link

2. Open the ArmA 3 Launcher, Load ACRE2 and it's dependancies.  Alternatively you can load the BigD Operation Mod Preset.
Once completed, launch the game.

3. When launching ArmA 3 with ACRE for the first time, you will get the notification that the ACRE plugin has been installed.  This is an automatic installation, if you do not get this prompt; you either have ACRE already installed or it has failed. You can verify with the later steps of this guide to see if it is installed correctly.

4. You now need to verify if the ACRE plugin is installed correctly in your TeamSpeak 3 client.  Open TeamSpeak 3, select 'Tools' from the toolbar and select 'Options'

5. Select the 'Addons' menu option.

6. Now on the right hand side, you should see your installed plugins.  You can verify that ACRE is installed and enabled if it's entry appears in this list and says 'Enabled' as shown.

You can also verify if the plugin is loaded by checking your user status on the right hand side after selecting your name in the connected TeamSpeak 3 client.  This will say 'Arma Connected: Yes' when in game.

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If you have installed ACRE, for additional troubleshooting, please log a ticket in the BigD Discord for ArmA 3.