Ecto is driving me insane

I love using Ecto, the desktop client for blogging. But lately it is being a bit of a b***ch. Most know that the only thing I change more often than the design of the site is my computers. So four Macs later, ECTO has started to quit asking me that the software has been registered on too many computers, even though all I have done is move my “settings and stuff” from one mac to another. Anyone has a clue on how to fix this?