While updating the app I've accidentally overwritten the db file. The most recent backup is 2 months old. I even bought file recovery program only to find it it won't recover what I need.
So unless you have any ideas the data from last 2 months is lost.
I guess I can only blame myself and I do, but that won't solve your problem.
Anyway that's what happens when the website is run by one guy on his spare time and is not getting any significant financial support.