In game when you type a capital "I" (as in igloo) it looks like a lower case "L." I'm writing this post saying that you might want to either
1) Ban the person with the account "Iopdo"
2) make the account for "Iopdo"
3) put in some blocking feature to prevent anyone from making the account "Iopdo" (of course this is a lot more difficult than just making the account)