Installer won't accept username and password on MacBook Air

I have Adobe Creative Cloud installed on my Dell laptop but would like to install it on my new Macbook Air. I can sign into Adobe on my macbook and download the installer (for Creative Cloud or any app) but when I enter my log-in information, the log-in screen just shakes and doesn't let me proceed. Like it doesn't accept my username and password. I've changed/updated my password and signed out of all devices, but still no. Thoughts?