Pinsukka

I worked on a note on my PC, switched to another note (so the first one should have been synced), worked on the second note for a while and left the computer. Hours later when I accessed the FIRST note that was supposed to be synced, the mobile app loaded an older version, overwrote all the changes I had made, didn't give me a duplicate note and I lost all the work I did. This has happened multiple times, what's going on? Doesn't give me much confidence to become a paid user when even the bare basics aren't working. I just love doing the same work multiple times, it's absolutely lovely. Anything I can do to recover the lost work besides "pay us to access history, because our software isn't working properly"?