Board Game Arena

Newbie question. I can activate a unit but how do I move it to an adjacent hex? I see the arrows on the hexsides, but clicking on the arrow does absolutely nothing.

You must click IN destination hex.

Click in the hex you want to move to (the number will be the number of movement points you have left when you get there).
If an empty city is shown in red you need to click on it to occupy it.
Enemy units will be shown in red if you can attack them but you can't click on them directly, you need to move adjacent and then either click on the unit (for mobile attacks) or on the arrow (for assaults).