nicolas at house com ar
or a PM here in the fourm will do to.
There is also an email listed in the about page. You can also whois fop2.com too.
If you feel adventurous:
http://www.fop2.com/downloads/fop2-2.21 ... 5-i386.tgz
http://www.fop2.com/downloads/fop2-2.21 ... x86-64.tgz
You can create groups to customize the buttons a user can view, or you can use panel contexts too. The first options is good for limiting views on one pbx, the 2nd is good for multi tenant environments. Both are documented in the online docs.