Hi Harold,
You can login to WikiTree with that email address as long as it is the one in your record here - it doesn't matter whether or not it is an active email account.
Once you do that, however, you should edit your own profile and change your email address to one that is currently active, so that you can receive contacts from WikiTree.
After you change your email address in your record here, you will have to use that one when you login in the future.