I am getting the radius zero when creating the zones...

Here's an example:

Trying create zone: Giant Excavator Pit(1656117573 | (-718.1, 33.6, -337.3)) (Radius: 0m) (Duration: -1s).

I believe this is the reason behind the domes not appearing in the map.

Is this a configuration problem ?

You have to manually set this value on the configuration.