Mission Planner Delay at waypoint not working

I’ve been trying to add a delay to a waypoint by typing a number into the Dala box also I have tried to do a loiter_time waypoint but in the actual mission it just stops at that point indefinitely. I’m flying an Iris+

Any help would be great

It’s me again.
Also when I add a takeoff point it takes off and just stays at that initial alt and does nothing more. It seems like I must be mission something.