I noticed that none of my recent flights have been recorded on the Go app at all. This is a major pain in the ass as I rely on it for my logbook. I have tried syncing flights over and over and over again. I'd deleted the app and reinstalled it but nothing. What do I do?

May I know what mobile device you are using? how about the DJI GO APP version?
When you tried to sync flight records, it said "failed"? what the percentage it went? have you tried to change the network internet connection?
Besides, if you did not sync it successfully, you will lose the flight records after delete the APP and re-install it.
Would you please try another mobile device the next time you flying?