Yes, checked that section on the website, and tried all those items. None seem to apply here. I'm making tags in the desktop window, which I can see are enabled to apply online because I've done them in different folders for a group library for about 8 weeks now, and worked fine so far. But this week, when I sync the files, they copy into the online library with no tags.
Generally, though, see Changes Not Syncing.
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