In the app I learnt a large number of words over a few months and didn’t sync my progress. My total points always updated, but my word total didn’t sync on the web version, even though on the individual courses it is updated.
It finally updated tonight after I restarted a course that was completely unrelated to my recent progress.
As you can see in the photos, the time is 3 minutes apart. Any thoughts on what happened?
I think this has happened before, something to do with restarted courses 
If you restart a course you have to re-learn words. Sync promlems are solved usually by logging out and in again or reinstalling
All of my progress was in a Korean course, but I restarted a Spanish course, so I was really surprised that it updated my total 