Well i want the timer to start as soon someone choose a team.
When everyone is dead, the wall starts all over again from the first point.
trigger_auto automatically triggers even if nobody is on the server, so you should put a trigger_multiple in this box that everyone spawns in, so when someone join they trigger it, then they fall into a teleporter that teleports them to the real spawn point.
"Delay before reset" it's the problem now. If i set it to low and someone step on the trigger again the wall get stuck, and if i set it to high then it get some problem after respawn.
Alternative as you said, just place the trigger_multiple outside the map and make som teleports, but then i need a trigger_once. But there hav eto be a easier way to solve this?