I am unable to change the name of a device (an iPad) that appears in the online Security panel of my account. On the iPad I delinked the device from my Dropbox account, then confirmed that it disappeared from the device list in the online Security panel. Then on the iPad I changed the device name using the prescribed method. I verified that the name had been changed in the Apple ID section of the iPad settings. Then using the Dropbox app on the iPad, I added the device to Dropbox again. It reappeared in the Security panel of my online account, but without the name change. So I am stumped. Changing the name of a device should be easy to do.