As far as I know Gypcrete from Maxxon is a proprietary product and requires a proprietary installation by one of their certified installation contractors.
What you should be doing is seeking the advice of your condo Board, they usually like to control all of that. They may even want to whip up on you for busting up the floor to begin with.
Any of the lightweight products like Gypcrete and especially Gypcrete is problematic when it comes to installing tile over it. You must use their system of top side preparation before you can expect tile to stay very long.
Therer are other brands of a similar product I'm sure, maybe someone here knows what they are called.
Why did you remove the subfloor product with the tile?