This was automatically on in the first edition with VPN, why do I have to manually engage this now?
Have a look at below link & check instructions under "Managing auto-connect permissions in Android 11"
https://www.bitdefender.com/consumer/support/answer/7128/
If the issue persists, kindly contact the bitdefender support by visiting https://www.bitdefender.com/consumer/support/ and scroll down to the bottom of the webpage where you can get in touch with support representative either by email, chat or over a call.
Regards
Thanks for the assistance.