Can't find assignment

[kenpower]

Windows 10. App downloaded 26/02/2020

Steps to reproduce:

Open & login Classroom Assistant app
Click "download Repositories/open in Classroom assistant" in assignment page

Expected:
Classroom assistant app opens with found assignment

Actual:
Classroom assistant gives "could not find assignment" error

NOTE: avatar in app is incorrect which leads me to believe that this is a login error
NOTE: as suggested with other issues, I tried logging in with user name and email. Same result both times
NOTE: I log in with 2FA

[kenpower]

More information:
I quit CA (classroom assistant)
Open CA to launch screen with login button, do nothing
In assignment page, click download and launch CA
CA window appears. I press "Log in"
CA presents login dialog
enter email & password
CA presents 2FA dialog
BEFORE I complete entering 2FA code, the main CA window (underneath the dialog) shows the error.
Then I complete the 2fa code and the 2fa dialog says "Cookies must be enabled to use GitHub."

[phortonssf]

I have the exact issue when I copy an existing URL from github classroom assignment it gives me the same error. Tried with multiple assignments in different github classrooms the same result.