fastPHASE is closed source and has an Academic License with several restrictions. The first term:
The fastPHASE software remains at your Institution and is not published, distributed, or otherwise transferred or made available to other than Institution employees and students involved in research under your supervision.
So no one can send you a copy of fastPHASE, and you should not ask for it. I suggest you contact the author for help.
I don't know anything about fastPHASE, but if you have the source code you should be able to compile it for 64 bit architecture.
There is no source code on their website ;(
32bit binaries will run on a 64bit OS.
It's not Running saying compatible error