I guess I have been overly lucky. Have not had issues logging into Netflix, mainly I think because I never get logged out in SF.
Definitely read post 2, as for me:
When I did the VPN trick, it worked 99% of the time. Activate a VPN. Pick a location in the same state if possible or a state close by, log in, and then disconnect from the VPN. Then the VPN won’t cause issues analyzing or downloading from Netflix. Of course, this is if in the USA; if elsewhere, try to pick a location near you in the VPN. It may not make much of a difference, as you only need the VPN active to log in.
So much for V6 or V7 improving and saving your login info :/