I use Bill.com for work, i log in through my intuit/QBO log in but when i click to log in it just spins and will not let me log in, this happens even when I go back and put everything in compatibility mode.
https://login.us.bill.com/neo/login
I expected it to have me log in through intuit and direct me back to Bill.com logged in. 
Version 1.0.0 (139), WebKit 623.1.8.0.0
Tahoe (26)