I cannot change the email address associated to my account. I can change my username, no problem. I can change my password, also no issue, but not my email address.
it's not super important, since typically I don't get emails from stardock, but I'd rather change my address since the one I have is going to be closed soon.
I guess there is a solution - creating a new account and then transfer the subscriptions. But it is just a bit of a pity that I cannot just change my email.