Sorry-
If you recall, that page was done under some 'duress' last fall, when the company dropped the SSO login on all of us without warning.
That message just means the normal sequence to login did not work.
Could be server, network, or stored info in FxCal.
Either way, FxCal needs to stop trying so as to not lock you out or not appear to attack the company server.
Most likely, you changed your password with FedEx, but did not change it here.
Next version has a little better explanation in the app.
It is here in the tutorial:
Login
Lots of other good info in the tutorial also
appDude

And next month you should be able to bid with FxCal on you iPad!!!