uninstall everything cc including preferences, https://helpx.adobe.com/creative-cloud/help/uninstall-remove-app.html
then uninstall the cc desktop app, https://helpx.adobe.com/creative-cloud/help/uninstall-creative-cloud-desktop-app.html
clean your computer of cc files per http://www.adobe.com/support/contact/cscleanertool.html
restart your computer (don't skip this)
reinstall the cc desktop app after signing-in with a correct email address, https://creative.adobe.com/products/creative-cloud.
if you're unable to install the cc desktop app at this stage, use an administrator account (solution 3 here, https://helpx.adobe.com/creative-cloud/kb/creative-cloud-missing-damaged.html)
use the desktop app to install your cc programs/trials
I followed these instructions correctly, but when I reinstalled the cc app the exact same thing happened that was happening at the start.
Delete the entire contents of the OOBE folder:
1) Quit the Creative Cloud desktop app from the gear icon in the upper-right corner.
2) Browse to the following location based on your operating system.
A) Mac OS: /Users/<user folder>/Library/Application Support/Adobe/OOBE
Note: The \Users\<user folder>\Library\ is hidden by default after 10.7. google enable access to hidden user library files | Mac OS 10.7 and later for instructions on accessing it or check https://helpx.adobe.com/creative-cloud/kb/unknown-server-error-launching-cc.html.
B) Windows: C:\Users\<user folder>\AppData\Local\Adobe\OOBE
Note: The AppData is hidden with Windows default settings. google Show hidden files, folders, filename extensions | Windows for instructions to show it or check https://helpx.adobe
3) start the cc app and sign in
Oh my God thank you so much.