So, we had Account Sync working under Scottrade, but it hasn't worked
for us since the buyout. I have verified that i can manually log in to
Ameritrade with account number and password, but putting that same
information in the "Missing Brokerage Information" is unsuccessful. How
do i put it in?

Additionally, since i've procrastinated on this will the sync miss
transactions that happened between the buyout and now?