Are you/ were you a CUNY student? I didn't get an e-mail about immunizations either but I think it's because I was a CUNY student and they have it in their records already. As far as the CUNYFIRST login info goes, it took a few days for me to receive the e-mail and again, because I was a cuny student, my login info was exactly the same. I wouldn't stress it! There's really nothing that we can do until we get more information. The Hunter e-mail login is just your cunyfirst login credentials as well. I hope this was helpful!