Often times, during your attacks on a target, you may cause the target to become unresponsive or mis-behave. In such situations you can request for a target restart by going to the target page and clicking the restart icon . This will put the target on a queue to be restarted. The queue is processed every minute. Once the system has been restarted, you will receive a notification informing you of the fact.
NOTE: Keep in mind that in order to request a target restart you need to either be connected to the VPN or have progress on the target