Safari connector, Safari 15, Zotero 5.0.97-beta.52+59455ebfa
Was excited to see Zotero Connector 5.0.92 listed as an extension on Safari 15 (which ships with macOS Monterey) when running the 5.0.97 Beta. Unfortunately, even when ticking the box to switch it on, the icon does not appear in the extensions section of the menu bar.
Is this your first time trying to turn on the Safari connector?
If you restart your computer and try again, does it appear?
If you delete the Zotero beta app from Applications and install it again, does it work after that?