As of Tuesday, April 22, at 11:59 p.m. PT we will be transitioning to only supporting FTPS. By switching to using FTPS, Yahoo is making the transferring of content more secure. If you currently use FTP to update your catalog items and images, make sure that you have updated the settings in your FTP client before Tuesday, April 22, at 11:59 p.m. PT, at which time we will decommission the ability to use FTP to transfer files. If you have not updated your settings before the decommission of the FTP, you will not be able to establish a connection to update your catalog.
For more information on these changes please visit the following help page: