changed gmail

Years ago I changed my Gmail address because I completely forgot my password to my Gmail account, a long time after I created my Epic account which hasn’t received notification of my new email address, even if I try to change my old email to the new one, I cannot activate it in my old Google gmail account, I just cannot ever ever ever know what my password is, I even thought lets see if I could close my Epic account down, I still have to access my old gmail address to get the code, so now what a stuff up I may need to go and create a new Epic account, using my new gmail address.