Zotero doesn't sync with Chrome or iPhone
I maintain my Zotero library using Firefox and the Zotero add-on for Firefox. All of that works just fine. However, when I access my account through Chrome to the Zotero website, none of the books that I have entered since November show up. The same holds true for what I access using ZotPad on my iPhone. Any ideas? I didn't see any solutions on this website that didn't involve the Firefox add-on with respect to syncing. Let me know what other information you may need.
https://www.zotero.org/support/kb/changes_not_syncing
You're simply not syncing successfully.