Repacks are strictly limited to the offline single-player campaign. You cannot access multiplayer, co-op spec ops, or any live-service updates.
The game required a mandatory, continuous internet connection, even for the single-player campaign. For players with unreliable Wi-Fi, those living in rural areas, or preservationists who want to play the game ten years from now when the servers inevitably shut down, this was a betrayal. Call Of Duty Modern Warfare 2019 Offline Campaign REPACK