Need a file directory for integration with Zombaio CreditCard processing

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HI, I have built my site all up, and now only need to integrate a payment solution, and found out Zombaio suits my needs just perfect!

My site is to a subscription site, and and after having paid/signing up through Zombaio, they should be redirected to the "members"-section.

But there is no way I can find the "members" directory via ftp, og cpanel file manager, even though my site has been built with that in mind, , so that all the pages i need have password protected is put UNDER the "members"-page in the site structure

I need to supply this directory to Zombaio, via ftp

My question is now:
Is there any way i locate my "members"-file?
if not, is there a way around this?? (would hate to switch away from Concrete5 again!)

Thanks

Tom