So I used this plugin to add a hacked locked crate to the top of Launch Site and inside the red card room at Military Tunnels.  Everything works fine mostly however players keep saying they will be running Military Tunnels and the locked crate just disappears before they reach it.  Any ideas why this might be happening?  Why it doesn't stay persistently?  I would think that it would only respawn a new one when the timer hits if it is missing but not despawn it at any time.  Thanks for the help!

Here is a picture of /mashow of the spawn point

Good find. I just checked the vanilla code and found that these crates decay. I can update the plugin to block the decay. For now, you can try alternate crate prefabs which might not decay, such as the oilrig one: codelockedhackablecrate_oilrig

Nice I'll give that a shot, and thanks looking forward to an update

Since v0.13.0, hackable crates placed via spawn points no longer decay, regardless of which prefab you use. Contributed by m-hynek on GitHub.