ReadyShare Cloud on Iphone Help!

I have a WNDR4500 with my external hard drive connected to one of the usb ports on the back. I want to be able to send pictures from my Iphone and Ipad directly to the external drive using the ReadyShare Cloud Iphone/Ipad app but I get an error message when I try to connect on the app on the phone. The error message says "Please check that your FTP service on your ReadySHARE is running and that you are running the latest version of the ReadyShare Cloud add-on." When I go to the Feedback/FAQ on the app to see how to do this, the FTP service seems to be on Frontview from the RaidAr program. When I install this program I can't get to Frontview because I don't have ReadyNAS equipment to detect. How do I fix this issue?

Thanks in advance!