Hi,
you have filled City value before create(or configured) a field google map, so it is not filled with a valid coordinates.
Now I have re-filled City for user test2 and now see a error "Parse error: syntax error, unexpected '=' in /home/honeydew42/public_html/
http://signaturesignings.com/future/modules/mod_jsnmap/tmpl/default.php on line 67".
Have you changed original file? if yes please restore original file and re-fill City field for all users (delete previous value and re-type), you will see a position in the map for each user.