...If you do not wish to uninstall the VPN app, you can follow the steps described by @Flexx to disable the automatic launching of Bitdefender VPN, from the Autoconnect settings....
https://media.kaspersky.com/utilities/ConsumerUtilities/kavremvr.exe
3) Remove the Bitdefender product that was not properly installed using the Bitdefender Uninstall Tool: https://www.bitdefender.com...
...I've cleared the cache and data, uninstalled and reinstalled, and run 3 different anti-virus provider scans, Bitdefender, McKaffee, AVG. None of them found anything on the scans....
It gave me the message that Bitdefender was uninstalled with errors and told to contact support. I keep getting a Bitdefender popup screen every 30 seconds or so....
If you search there, you’ll easily find that the standalone Avast Uninstallation Utility can bypass the password restriction and uninstall the Avast product....