To ensure that your full width

look good across any device big or small the recommended size is 2400x1600px. Note that devices have different ratio than the one you shoot and it is possible your

will be cropped when viewed on web.

Open the Home screen of PS4, and then navigate to the Settings menu and select Account Management. Select Restore Licenses and then click on Confirm if prompted. Wait for the process to complete. Then reboot your console and check if the Call of Duty Modern Warfare Multiplayer not working issue gets fixed.