I and my bro are trading in the same roof. How could we join this competition as we are using the same IP?
Each computer has its own external ip. So, as long as you are not trading from the same computer, you are good. Just sign up and compete/practice/trade.
That is my view on it. But just to be sure, check with the broker's help directly as well.
"Failure is simply the opportunity to begin again, this time more intelligently." ~Henry Ford~