@leezeca, I’m sorry to hear you lost some observations. Unfortunately, I’m not sure there’s much we can do unless we can narrow things down with an obs URL or a relatively narrow date range in which you noticed the obs was gone. Finding “an arrowshaped micrathena spider uploaded in July-Aug of this year” would mean digging through 2 months worth of backups, which isn’t trivial.
We’ve had some problems with mobile apps getting into weird sync issues that sometimes result in deleted obs. Looks like you’re using the Android app, so if you installed it before last spring or so (I think that’s when we released the fix), I would advise completely uninstalling and reinstalling the app to make absolutely sure your local database gets removed and replaced and you have the latest version of the app. Sometimes issues like this manifest as lots of observations deleted at a regular and rapid pace, and we can see that in our log data and in our records of deleted observations, but looking at these kinds of data for you doesn’t show anything like that.
I will say that the log data suggests you delete observations pretty regularly, like a couple every week since Sept. 1, on the web and from the Android app. Does that sound right?