I don't know anything about that initiative
but having done an internet search, the website says 'We offer free ....' so not sure why they are asking for onfo on finances .... unless it's relevant to the particular enquiry/issue you are raising with them
I also did a search, generally it came up with initiatives related to a specific geographical area.
I felt that the 'we offer free' could be means tested.
Why not ask the specific Advocacy Project for information?