Please edit your personal information out of your question please as is a public forum.

There is the Hidden Menu at the top. Mouse to top of Browser and Right Click in a Empty Spot, Click Menu Bar.

There is also another Menu to the far right. it is the 3 Bar 's

https://www.howtogeek.com/333805/how-to-change-or-customize-firefoxs-new-tab-page/

https://www.howtogeek.com/333110/how-to-customize-firefox-quantum-and-remove-the-white-space-around-the-title-bar/

Find alternative addons - Extensions https://addons.mozilla.org/en-US/firefox/extensions/

https://mozilla.github.io/extension-finder/

Flash Player Version: 27.0.0.187 Current Version https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, . . . .) Note: Other software is offered in the download. <Windows Only>

Please let us know if this solved your issue or if need further assistance.

Sorry, thought put this in.

Please do this 1st before install : https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer Will have for a long time if export and overwrite the file. Save safe place.

uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files and C:\Program Files(x86) Then restart system. Note: your Firefox Profile is saved. But you should make a back up before you do : https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Reinstall with Current Release Firefox 57.0.2 with a Full Version Installer https://www.mozilla.org/firefox/all/

Please let us know if this solved your issue or if need further assistance.

If this is a really old system/low ram then need to be on here please and not the above.

52.5.0 ESR. It will continue to get security updates until May 2018, and you can download and install it from this page: https://www.mozilla.org/en-US/firefox/organizations/all/ Note : Legacy Extensions will be deleted or removed in any version update after May 2018.

You should make a backup of your Profile before going back and just because: https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Please let us know if this solved your issue or if need further assistance.

Note that Firefox 16 is quite old. User Agent: Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:16.0) Gecko/20100101 Firefox/16.0

What Firefox version does your Linux distribution support?

Verify that you meet the System Requirements (GTK+ and GLib) for the current Firefox release.

• https://www.mozilla.org/en-US/firefox/57.0.2/system-requirements/