Tylee23, I'm able to get SFS to work on both J1.5 & J2.5 without any issues. Make 100% sure you are using a 'correct' Joomla version (J1.5 or J1.7+) and a current Flickr photoset ID#. Finally, make sure this module is published and assigned to a working module position and menu item. If your still having issues please go to my website and send me an email and we'll get it working in no time!
Having difficulties sending "Private Email" from the ad.
Easy to install - easy to change and set in admin - just can't get the email to work.