Disney now requires 2FA periodically, where you need to enter the code they send you by email, to validate actual live person using it and valid email. Nothing to do with SF. Just enter it, and you’re fine. They now do this in place of password randomly. If they think you are using multiple “devices” it’s one way to thwart account sharing.
For HBO, login to your account in web browser and change/update your password. Thhen go back to SF and enter your new password. Worked for me. Again, SF is not doing this to you.