The second one could work, with the cat in the A (although it's a white cat), but they all need refining/simplifying. Have you tried one with just the A made with a solid blue cat silhouette, it might work?
I don't understand where the Squarespace thing comes in and why it's needed, it makes the whole thing too complicated and just 'added-on' and like it's two different companies.
Apart from the fact that Squarespace is a very well known website building platform.