If you encountered any issue when using the extension, please get in touch with firstname.lastname@example.org and we will be able to assist you further.
Enter chrome://extensions/ in your address bar to visit the extension settings
Identify the Lean Library extension and use the slider button in RED to temporarily disable or the remove button in BLUE to remove
Visit Add-Ons section by entering about:addons in the address bar. Alternatively, select Tools > Add-ons
Identify the Lean Library extension and use the buttons provided to disable or remove
Select Safari > Preferences or press ⌘, to enter preferences
Click on Extensions and identify the Lean Library extension
Use the check box in RED to disable and the button in BLUE to uninstall
Click on Slidebar Setup (the bottom right) > Show Extensions
Identify Lean Library extension and use the button  to disable or the X in the top right corner  to uninstall
Type in "edge://extensions/" on your URL and click Enter
You can disable the Lean Library extension with the slide slide button in RED, or you can click the remove button in BLUE to remove the extension.