I only have usage figures shown up to the 24th Feb ( when looking at the daily stats).
Yes, 24 February is the last figure shown for me in the Portal - and an implausibly low figure, which suggests that it stopped recording some time before the end of the day. And the bit where it tells you when you're likely to run out of allowance is N/A.
My usage checker seems to be acting up saying incorrect username/password and now it says in my portal login account locked for a 1hour due to many incorrect login attempts.
Clearly trying to refresh the usage checker made the system go mental.