You can find your m2ee file in home/yourprojectname/
Navigate in your ftp client to the root and then in the home folder. You should see there a folder with your project name. You can find you m2ee file here.
Possible locations for the m2ee config file are as follows:
where you should replace "user" with the username that you've logged in with. (note that ls -l will not display files that start with a ".", but you should be able to view them in your SCP browser if you set "show hidden files" to true)