Many thanks for your reply. I followed your instructions and was able to confirm my own computer as the Back-up destination (I had not thought to hold down the PC device name at the top of the instruction page). I backed-up my files successfully to my computer, but could not then find them. I did find them in the end but now cannot remember how I did so or where they were. Is it therefore possible to change the Back-up folder to one of my own choice? Once again, many thanks for your help.
Hi, you can find the location of the Backup files in the Settings on AirDroid desktop client. Settings>> General>>Backups.