Access backend DB data lost?

Good Morning,

A year ago I developed a simple DB for my employer to keep track of folks requesting an appointment for our clinics via our website. I split the DB and put it on a network drive so cust-service folks could open it from their clinics physical location and be able to see any updates that were done by someone else since the backend DB was on the network. It has worked beautifully until this past week, now when opening the _be.accdb it is empty and should have 50-100 records in it. The file size shows as 696KB so I think there is data in it....I've tried exporting from it but the export file is empty after all attempts. I've also tried the repair button with no change, not sure where to go from here, do I have other options? My experience is limited to self taught to develop this application to satisfy the business need....I'm not an access developer but can learn.