Try following the procedure below, and check if the field to bypass password on login appears again in netplwiz.
1. Press Windows+R, type regedit and çlíçk OK;
2. Access the path below in the registry editor:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\PasswordLess\Device
3. Double-çlíçk DevicePasswordLessBuildVersion;
4. Set your value data to 0 and çlíçk OK.
5. Restart your computer.
Then access netplwiz again and check if the option appears.
1. Press Windows+R, type netplwiz and çlíçk OK;
2. Uncheck the "Users must enter a username and password to use this computer" box;
3. Confirm with "Apply" and then enter the password/confirmation of the current password and çlíçk "OK";
4. Restart the device and it will automatically log on.