Wow Accounts - Ip's, VPN's and your experience

[Rhonso]

Really curious about this matter since every better seller offers that he logs with your national IP and tell everything is safe.

I had some experience that if I used some VPN's Blizzard locked (the one you need to unlock with GM)/banned the account. But that was like 2 years ago. What's the current state of this?
Is it better to use your own or free/paid? Is there some SW that player A logs into account of player B and company C sees only player B? Something like Teamviewer let's say.


Sorry if this sounds confusing, thanks for your opinions

Cheers