You should indicate the date of birth format. Apparently it is YYYY/MM/DD; but you don't say so.
The field for the telephone number isn't wide enough.
You say a code has been sent, but you don't indicate where to.
Email or telephone? You should say.
The system does not send a code to ether. The first form doesn't work well in chrome, but it does in firefox (I have both, so I know)