No "Z" toolbar icon. No library web interface. (Zotero 5.0 + Firefox 55.0 for mac)
I'm having problems with Zotero+Firefox. Very frustrating. The old "Z" symbol on the Firefox toolbar has been replaced with a document icon that "screen shots" when I click on it. Before Zotero and Firefox were updated, it worked easily because when I clicked on the "Z," the library show up at the bottom of my web browser in split screen mode. I can't get it to do that anymore. Please help!