There are will be 2 subs available.
1st one unlocking almost all in the shop Second is unlocking only camos and attachments for opened clearly Modern Warfare weapons
How to operate :
Open loader, select sub.
Load it, wait 2 consoles with Success and follow loader instructions.
Open game and wait sound beep beep , enter to lobby and open operators page, if you see all opened operators then job done, all working.
Configure your loadouts, operator, vehicles skins, badges etc and close the game.
Load game again without unlocker and you can play with saved loadouts.