Lots of products disappeared from store categories

I was looking at my wedding store and noticed several categories appear as empty.

And this category has just one product left, the rest is gone 

This product for instance, also belongs in this category:

https://www.zazzle.com/artistic_painted_coast_beach_wedding_invitation-256444934958968564

I remember trying to re-order products in different categories a while back, but now everything seems to have gone completely.

The stats are also quite a mess. When I view the last sold dates, all dates are messed up.

And I have sold things from this store yesterday, but the last viewed date shows that for 2 days nobody looked at anything …

I don’t dare to explore further what is happening for fear of discovering more problems …

Thank you for your help.

Don’t worry, I noticed exact same thing, items missing, no sales or views for two days but there were sales in the earnings report. So, another weird blip plus indexing issue I imagine.

I have had this problem since Easter. Search for products by department is not generating all product results

This is still a mess, can any of the moderators please look into this?
Thank you!