ERROR: Only Admins Can Place Trades- what does this mean?

This means that the Evaluation account has been failed and has been disabled. 

It either means you have reached your Trailing Threshold Drawdown , your hit the max loss, or that you have held a trade past 4:59 PM ET.  The Help Desk does not have any other information than what is shown here.

You only will need to reset your account/s