But you can still log on ecas using his credentials. even if you don't have his cui, you can use the application number, you have it on your aor. Then you need his family name, date of birth and country of birth.
https://services3.cic.gc.ca/ecas/authenticate.do?app=ecas
Again, if you see decision made on both side, there is nothing to worry about.
Did you order your GCMS notes already? The fact your husband didn't receive anything yet might be just because they made a typo in his email. That was the case for me. After receiving the notes, I sent a CSE to make the correction in my email address.