turn off macOS System Integrity Protection (SIP) check
OS X El Capitan introduced a new Security Feature called System Integrity Protection. With System Integrity Protection Bartender 1 needs additional setup steps performed before it can control Apple menu bar items such as Notification Center, Battery, WiFi etc. Bartender 1 can still control menu bar apps fine, without these additional steps.
Unfortunately we cannot automate all of the setup and Bartender 1 will need you to temporarily disable System Integrity Protection to allow it to install its System Item control component, System integrity Protection can then be re-enabled.
Apple have made the steps to temporarily disable SIP quite difficult, so we now recommend only performing these steps if you really must control Apple Menu Items with Bartender
1 Restart your Mac, and as soon as the screen turns black hold down command+ R
2 Now click on the “Utilities” menu, and then “Terminal”.
3 In the Terminal Window that opens type:
1 | csrutil disable |