All of my applications report in as published and up, however, I've gone from 60+ daily downloads to absolutely zero across all applications for several days straight. This seems very odd and more like an error in MS reporting on dev.windowsphone.com. Does anyone know why this may have happened? Is anyone else experiencing this problem?
I think they have downvoted your question because is not a code related question..
Anyway.. It's a DevCenter's known issue and normally it's resolved within a few days.. All the lost report will be restored, don't worry! It's not the first time!