Open Mozilla Firefox. Select the certificate to be removed under the Your Certificates tab and then click Delete. Click OK to confirm your intention. Your certificate has been removed.

I found bag: All the buttons, including the "delete" button, are located very low under the list, and you need to rotate the mouse wheel for a long time to get to them, while the entire list of "authentication solutions" scrolls up, and the desired position is not visible. This is incorrect. The "delete" buttons should always be displayed! This is a clear bug. The same thing happens in the list of certification servers, the buttons also do not appear on the screen until the entire list is scrolled down to the end. :(Please fix this bug.

• pressing the "Delete" button on the PC keyboard does not have any effect at the same time - there is no reaction, and there is no "Delete" button on the screen (more precisely, it is not visible, only the "Ok" button is visible, see my screen), and is also no context menu when clicking the "right mouse button" on the desired line. This violates all the established canons of working with the Windows interface, and is a "kindergarten" bug, which is strange to observe in version number 108 in 2023.

Not sure what you did to your firefox install but I can clearly see the buttons below my box for delete options. Using the PC delete buttons isn't what you use that for you need to click the delete button in the box to do the actions. Arrow is pointing to the delete button.