Please go to Adobe Customer Service (make sure to sign in to your Adobe account first and allow popups on your browser):
https://helpx.adobe.com/contact.html?rghtup=autoOpen will automatically open the chat window.
Type "Agent" in the chat box to bypass the chatbot and be connected to a person.
You may also be able to contact Adobe by phone:
https://helpx.adobe.com/contact/phone.html
Thanks!
For anyone else with this problem - I ended up having the Creative Cloud Unistaller (https://helpx.adobe.com/download-install/kb/creative-cloud-install-stuck.html?sa_src=AVA_JC_bot-eng-Troubleshoot.FrozenInstall-CCI-SS10-msg#sa_src=web-messaging), which uninstalled and re-installed Creative Cloud, then logged out and logged back in again, and now it's finally working 🙂
Also the chatbox doesn't seem to work on Firefox, even after I turned off all my adblockers and pop-up blockers, but it worked fine in Chrome
