I gave Awry Plod a shot too, for clue 3, "Hey 'E', how often it you, how often it 'B'?" and apparently came close with the answer letter frequency, because they wrote me back saying:
You came really
close on the "letter frequency" response but I need the perecentages that
represent that letter frequency (maybe you still have time to find a friend
that could register and win it with that little bit of insight).
So there's a big hint to you all to get the points!