In some situations, disabling and then enabling the Lean Library extension is necessary to reload the Extension settings.

Please follow the steps below to disable/enable your extension:

1: Please press Ctrl + Shift + A
2: Enable/disable the extension by clicking on the button twice

1: Place chrome://extensions/  into the search bar, then click enter  
2: Enable/disable the extension by clicking on the button twice

1: Please press Ctrl + Shift + E
2: Click "enable" and "disable"  

1:  Click on the three dots menu in the top right corner, and select "Extensions" from the list

2: Click "Off" and "On" 

1: Go to Safari and then Preferences (cmd + ,)
2: Select "Extensions" on the preferences menu  
3: Check and uncheck the box next to the Lean Library extension