Invading Planets only if AI thinks you strong enough?

[Schatten]

So well....i killed the Spaceport (and so far all installations around enemy Planet, his Homeworld, however the AI keeps build ships at the Planet itself that go blow up) with a attack Fleet.
As said its the Homeworld of a AI Empire and their only World.

Now i moved a Invasion Fleet of 8 Troop Transports with 2 Large Troop Compartments and 2 Assault Pods each and some Frigs and Destroyers as Escorts next to the World. I have around 15 Troops here, mix of Infantry, Tanks and some Special Ops.
Now if i select the Fleet and than click on the Planet i get the Options to Attack,Raid,Block the Planet.
The Combat Fleet has the Order to Block the World and if i now click attack Planet for the Invasion Fleet nothing happens. The Fleet just sits in Orbit and dont unload Troops. Cannot Figure out why. As said Transporter have Troop Compartments, Assault Pods and Troops loaded, also a General.

Enemy has 15 Troops and Defend Strenght of 3292 at the Planet Overview. My own Troops show 2460 Strenght in Fleet overwiev. Is that the reason why it dont attack? and if yes how much more you need? would 3293 be enough or how much it needs to be?

[WiZz]

You should set Tactical Setting (fleet or ship) - Invade Colonies - Immediately.

[Schatten]

You should set Tactical Setting (fleet or ship) - Invade Colonies - Immediately.

ah thank you, that was it in Fleet Tactics....just overseen it, was my first invasion