If you play with another player at the same location (same phone, same computer, same wifi, house, same office, same campus and other things like this) then you need to report each other as with Report IP Sharing.  You can go to the Manage Menu, then on the right is Report IP Sharing.  You put in their name, and the association with them.  They put in your name and their association with you.  You do this on *every* account.  Without reporting, you may be killed off as someone who has multiple accounts.  I can't stress how important this is to ensure the safety of your accounts.  A dupe IP report does not work without the name of the other accounts you are sharing a connection with, so please have this information when you fill it out.  Thank you.