Did you read Manage your extensions using the extensions button in the toolbar?

Hello TyDraniu. Yes, I have read the instruction manual. When I click the puzzle piece in my toolbar, it does not show me an extensions panel. Clicking the puzzle piece takes me straight to the Add-On Manager. From there, I do see my extension, but it does not give me an option to pin it to the toolbar. Even more strangely, some days I can open the extension, but most days I can't open it at all. I have uninstalled and reinstalled Firefox twice with the same results.

You aren't using Private Browsing mode as extensions may not have set to run in PB mode.

• https://support.mozilla.org/en-US/kb/extensions-private-browsing

Hi cor-el, thank you for your reply. No, I am not using private browsing mode.

Note that not all extension might add an icon to the toolbar. Did you check the screenshots and description on its Add-ons page ?

Hi cor-el, thank you for your reply. This extension (Bitwarden) has been added to my toolbar in my previous computer using the same operating system (Windows). I can also currently pin this extension to my toolbar in Firefox in MacOS and Ubuntu. This extension is pinned to the toolbar in Chrome on the computer that I am currently using. And SOMETIMES the browser extension will even work on Firefox on the computer that I am posting about. So I believe it is a Firefox-specific problem in this case.