Thank you for reaching out to the Community regarding your issue, although I am sorry to hear that you are experiencing issues with your sync. Since you've already tried resetting the cloud a couple of times we'll try a different step. We'll want to remake the dataset. To do this we'll need to delete our existing dataset.
To start off we'll want to create a new file. You can do this by going across the top to file > new > Select a name > Don't use mobile and web > add account. From there you'll want to follow the article down below on how to delete datasets. (You don't need to add any accounts)