PayPal
they are a law unto themselves, there only easily accessable 2FA is SMS based, and they dont see an issue there either, or with the alternative method of Security questions too...
If you search the web you can create an TOTP token that you can use but this requires an element of trust in a third party and doesnt turn off the security questions option either
Now if PayPal offered their own TOTP second factor set-up it would be a start