Proving Accounts Are Different People

Ok so I'm not sure if this belongs in here but it's a question that needs an answer so this is where I'm putting it as of now.So my account and my friend's accounts got banned by the anticheat because it thought we were multiple people playing on the same account.I made a post about it and I got a response email saying to explain my relation to the accounts and to provide proof that every account involved is linked to a different person.I have no idea what to do.I'm not sure how to prove that the accounts are different people.Like sending pictures of the people and showing their unability to log into their account wouldn't wok because the staff might think I'm just asking my friends to help me get accounts unbanned.Not only that but most of the people involved have uninstalled call of war so I don't know what to do.As far as I know my friends no longer want to play except for one and don't care about their accounts anymore.Only two of us still have the game installed and want to play(lorddoom23 and CowJesus).If there are any suggestions of how I can prove that the accounts were created and used by different people the help would be greatly appreciated.Thank you and have a nice day!