The fix is as follows:
Install these magisk modules:
Magiskhide props config v6.1.2-v137
Shamiko v0.5.0
Universal safteynet fix v2.2.1
Then app:
Safety net test off play store
Then in magisk hide, hide:
Google playstore
Services
Framework
Netflix
Uninstall and then Install any Ver netflix
Reboot
Update netflix, It may work (Did for me) However...
Reboot
*load netflix, it will crash or error. Just double check Safety net pass to be sure you pass
Clear cache + data to all apps hidden and Netflix
Open Netflix and it should then work, otherwise force close and reboot.
I found after this mixture (I'm sure it was this way) i was able to load and play something on 4g and wifi and reboot fine. All ran okay regardless since
Either way its safety net related but maybe device registered/Flagged. Worst case sign out of all devices and log in fresh so it says a new login has signed in to your email if you have that set up.
I have a feeling this could be part of netflix's clamping down on accounts and this could be a temporary fix