Built defence platforms not showing up in a defensive battle

As title, not much else to say

I have as well and missing a ship or third fleet in battle i do belive its beacuse the build of game is demo and a beta the enemy will have them but like i stated its a beta build of the full game

it happened to me as well i assume it was because i bought it before the planet was level 2 but never got to test it out as they did not attack again.

Level of planet not connected to defences i do belive that it is not operable because many other features are not in beta like other space buildings beacuse build slots are there but not usable untel full release