Why can't I select Sales & seller's use tax in the admin console?

I can't select Sales and Sellers use tax for Illinois therefore I'm collecting sales tax when I should be collecting use.

Internet Explorer Avalara Avatax

If you are unable to use certain parts of the admin console please be sure your browser is the most up to date version. If you're on Internet explore that will be Version 11. 

Note: You can use Google Chrome or Mozilla Firefox as alternatives