I use 2FA and love it, however one issue I faced that I wanted to highlight for anyone having missing sms issues... in our country we can keep the number but change phone company, called porting number to other carrier... it works great however international sms which is mostly the case with 2FA messages, never work after number porting. Do not know it is just issue with our country porting config or universal problem. So anyone having issue of no sms received...may look into it if number ported...