talk to an advisor and everything has a solution except death, my friend

I am completely new to this, I just created my account and I've already started off on the wrong foot. In the registration, I wrote my email incorrectly and as soon as I realized it, I wanted to go back to change it but it wouldn't let me. I continued with the registration, but every time I want to change the email, it tells me that it will send a code to my phone to proceed, and it never sends it. I won't continue using it until I change that, how can they not allow you to go back in a registration? This is ridiculous.