I was able to finish a game, which just froze at the end. The scenario editor is completely broken. You are supposed to be able to start with an existing map, choose a custom or core OOB and place your units. But it seems the data from the maps is not clean, so I have units that are already placed based on the scenario map, or "fixed" although I didn't place them fixed, units with no action points, non-selectable units, on and on.
So I will try modifying existing scenarios slightly. UI is better than the Ancients and reasonable unit counts and "area" concept seem workable. But very confusing if there is a battle, a window pops up, but hard to spot where it happened.
If this was Steam, I would refund. See why Steam is good?