The current Safari extension requires Safari 10 or later. You should upgrade to the latest macOS and Safari or switch to a different browser, since Safari 9 is no longer supported by Apple and not safe to use.
The download page is supposed to offer an older version of the connector for Safari 9 and earlier. That was temporarily not working, but it's fixed now. Again, though, I'd strongly encourage you to upgrade your OS/browser instead if possible.
The download page is supposed to offer an older version of the connector for Safari 9 and earlier. That was temporarily not working, but it's fixed now. Again, though, I'd strongly encourage you to upgrade your OS/browser instead if possible.