Maybe they've change it so that not only does the bar have to fill up, but it has it has to be fully white as well, hence it's only at 27% now.
I read this on the MOS Fan FB page:
Everyone! Per the email I got, they are working on the app right now. Some were experiencing some troubles which were due to the app's popularity. It may have slowed down the meter, too. Hang tight and it will be all good to go again!