Smart fill for notebooks/tags on webclipper for Chrome (Mac OS 10.12.6, Chrome v 80.0.3987.163) is also not working and related articles not showing after clipping. Have tried reinstalling webclipper but no change.
If your family member has done the whole restart / reinstall thing, I can only suggest that you raise it with Support via Twitter @EvernoteHelps, or check out the Evernote community on Facebook.