Update Security Questions
If you no longer remember your security questions or need to update your questions, you can easily do so. First, click on your profile picture. Then, select the Information & security tab. Finally, select "Security questions".
Once on the Security Questions page, select the two questions you would like to use and enter your answers. Once complete, select "Update profile".
Security answers are case sensitive. If you enter them with a capital letter, they will need to be answered with a capital letter later on.