I think there has been a change. I have economy 7 and it looks similar to yours but with a sun and moon symbol to signify which is day and night. I am sure this used to be in words and something else different that I can’t quite put my finger on.
Have you submitted readings before? With readings that low it’s as if you have a new meter recently installed, does 00648 tally with your last submission?
I wonder if its wrongly showing both areas if you are on single rate? Any body else have the problem above?
Might be best to contact bulb on chat / phone to check your meter configuration is correct upon their systems particularly if the figure does not relate to what you expect.