End of Day (EOD): the drawdown policy is based on closed profits at the end of each trading day and follows a trailing system, with the Max Loss Limit set relative to your account balance at the close. If the account has a losing day, the drawdown remains unchanged: it only increases after a profitable day. Intraday swings and open profit never move it. Once enough profits have been accumulated (profit equal to your drawdown amount), the drawdown locks at the account's starting balance and stops trailing. From that point, the worst case on the account is breaking even.
If your account closes a day at or below the Max Loss Limit, the account is breached. A drawdown breach is final: positions are liquidated and the account cannot be recovered. To trade again you can reset the account or start a new challenge.