Well today I am locked out of Binance... no SMS for me ... I just cannot believe this is happening. Opened 2 tickets already... sent all info of my celphone number, etc... even sent a twitter to binance and dm them... no reply...
Looks like many people are having the same issue.
Look at this post
https://www.reddit.com/r/BinanceExchange/comments/82g2kb/binance_stopped_sending_the_authentication_sms/I think this issue still persist and still not solve by binance.
That is why they are not replying it's because they are busy reading customers issue.
The only thing that you can do now is to wait until they disable the sms 2fa because there are many binance users are couldn't login with sms 2fa.
Just keep message their support to inform them about your issue to include your account in disabling 2fa or switch to google authenticator.
They havent given or say a word related to this issue which same as you said maybe they are busy either on reading up and at the same time on resolving such 2fa sms issue.So far on using up binance i dont have any problem with the codes.Just make it sure that you had inputted the right number and your phone should have signal so that you would able to recieve codes but since the issue is already rampant then the problem is already on their side which all we can do is to wait up for them to fix it.