I was able to cashout with that phone in the past but from one day to another I received that error message
It means you already have a functional 2FA authorization activated but still it doesn't work from time to time, well it depends on the format you are using if you are using your mobile authenticator where codes get sent to your mobile phone number, note that such otp may get blocked if, your country have regulations against such services.
Best way is to have 2FA application or device where you can generate your codes instead waiting to be sent a code.