Before using the cheat:
Run Discord as ADMIN and enable Overlay!
Extract and open the loader as an administrator.
The loader should appear. Simply enter the serial key obtained from the shop.
Wait a couple of seconds and If you see [COD] in top left corner you successfully injected!
Open COD IN BORDERLESS MODE! and if everything has been set properly you should be able to see the menu by using the "INSERT" button from your keyboard to open/close it and clicking at the options to interact with it.
To select an aimbot key, you will need to manually enter the digital number assigned to each key. Number related to each key can be found here: https://cherrytree.at/misc/vk.htm