Thanks for the clarification. So it's safest to not use at all with a VPN, but if I do it a few times then I should be fine. Did I understand that correctly?
I also use a VPN for being online the entire time.
To stay out of any trouble that may occur I use the Offline Key Authentication.
Link.
[Edited by Taurusplopp, 9/10/2016 7:54:20 AM]