Due to our huge user base, DriveHQ FTP site always has a very high number of concurrent connections. In order to serve more customers efficiently, our FTP site automatically disconnects idle FTP connections in about 4 minutes of inactivity. For a free service user, it is recommended to connect to our FTP site only when you need it, and disconnect it when finished. If you have a paid account, it should work better, plus, you can also access another FTP site: proFTP.drivehq.com