I did notice on their Welcome Cakewalk customers page, for Method 1 it says "Log into your Cakewalk account and take a picture of the Cakewalk Command Center page showing your
email address and your serial number"...
When I log into CCC, it shows my username, not email address...so, I sent them a screencap of my account page from Cakewalk as well, showing my username and email together, just in case. Not sure it matters, but I really would love those unlock codes...