Your device isn’t part of the Netflix Household for this account (Easy Fix)
This message Noramally occurs If you're using a device that's not associated with the Netflix Household.
How Netflix Detects Devices within a Netflix Household
Netflix uses information such as IP addresses, device IDs, and account activity to determine whether a device signed into your account is part of your Netflix Household.
If you're using a mobile or portable device that's part of the Netflix Household but see this error, confirm that the device is connected to the same Wi-Fi as a TV or TV-connected device associated with the Netflix Household. If the problem persists, update the Netflix Household from your TV or TV-connected device and then restart the Netflix app on your mobile device.
First, make sure you aren't using a VPN
Also, Try this to fix
close Netflix app, then Turn airplane mode on go to the Netflix app turn off airplane mode
