I moved you to your own thread so that we can further assist you. Please try the following steps:
1. Delete all of your Ghosts data
2. Disconnect platform from the internet
3. Install the game offline
4. Shut the system off and plug internet back in
5. Turn on platform and download the updates
Note: If it sends you to the campaign, save and quit to get to the multiplayer menu.
This method has helped players experiencing this issue in the past. please let us know if this resolves the issue for you!