I'm having issues with Bitdefender Central. My devices, three in particular, are constantly replacing each other in Bitdefender Central. I have checked their physical addresses (MAC addresses), uninstalled Bitdefender, re-installed Bitdefender, but the problem is still there. It seems that the device most recently logged on is the one that shows up and the others don't appear in "My Devices" on Bitdefender Central. All three of these particular devices are Windows notebook computers. All my other devices show up correctly, but these three only show up in one slot with names changing depending on log-in status. This seems to be a relatively new occurrence for me.
I have already done all of the troubleshooting, IP addresses checking, uninstalls and re-installs as suggested by the tech support article.
Not sure if this helps you on your end, but the three computers that keep replacing themselves in the “My Devices” list are all Microsoft Surface computers. At any one point in time, only one of those three computers shows up in that “My Devices” list. It appears that the most recently active (on-line) device is the one that shows up in the list.