I've been doing mobile syncing of my mobile phone on Dropbox for over 10 years and haven't had any issues. Recently I noticed large chunks of years are missing. For example the entire year or 2025 there are only 2 photo back ups and in 2023 there are only 35 photos for the whole year that should be synced automatically via the mobile app. Large chunks of years are missing from my backup. This is further worrisome as I have 600 gigs and now only 77 gigs are being utilized. Why has suddenly a large amount of data been removed/missing?