You may have been hacked. Can you get into your icloud.com account? if you can then I would call apple. It may be an issue with your phone thinking that that email is the email used to activate the ph ...

http://www.ibuypower.com/

Try uninstalling it and install it on an external hard drive attached to the console? That is very odd if it is from the marketplace and it is doing that.

Is it just COD ghosts? have you tried to install and play another game? look for scratches on the disc as well.

1. Make sure you have a solid internet connection
2. Make sure iTunes is up to date (uninstall/reinstall it)
3. Disable firewall and antivirus temporarily.

Give this a shot, hopefully it helps!

I would try a factory restore. Sounds like an OS issue.

http://support.xbox.com/en-US/xbox-one/console/reset-console-to-factory-defaults

Stallion9,

I can answer a few of your questions but not all of them.

3) How can students play amongst themselves , such as competitions etc or how can students they indulge in multi gaming , is ...

No, the easiest way is to just call sprint and see if they can unlock it for you. Most carriers will do it for free.

Connect it to a computer and it will come up like a USB drive. The only thing you will be able to do is look at the pictures on it.

It could have been a tweak clashing with another you installed recently as well.