I recently began using Zotero (5.0.22) on a Mac (Sierra 10.12.6). I want to try the LibreOffice add-on. I installed LibreOffice. The Zotero icons are nowhere to be found on the LibreOffice toolbar. I tried disabling the plug-in in Zotero, restarting, re-enabling, and then restarting Zotero. No difference. Originally I had LibreOffice 5.3.6 installed, and then I tried the version for the more "conservative" user, 5.3.6. No difference.

What do I try next?

https://www.dropbox.com/s/9f46tu5mpogzl47/officelibre toolbar no zotero icons.jpg?dl=0

Thanks.