[nyuszika7h]

I definitely had TOTP before I had U2F. I think you mean after enabling SMS 2FA, not U2F.

[ranger_danger]

Nope, while I also did have TOTP before U2F (because it wasn't even a thing then), the rules changed to where if you don't have a phone number on your account, then you're required to enroll a U2F device before you can turn on TOTP.