Dropbox file change sync no longer works, what should I do?

Option 1:

Sign out of Dropbox Android app and sign back in will usually resolve the sync issue.

Option 2:

When done editing the document, instead of closing the file, select "Share" option menu and save it back to the Dropbox folder where the original file is located.
Replace the original copy with the new annotated copy.
This will ensure the file is saved correctly.

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