you can try to reset profile: https://support.mozilla.org/en-US/kb/reset-firefox-easily-fix-most-problems https://support.mozilla.org/en-US/kb/reset-firefox-eas

you can try to reset profile: https://support.mozilla.org/en-US/kb/reset-firefox-easily-fix-most-problems https://support.mozilla.org/en-US/kb/reset-firefox-easily-fi... Also, AdBlock plus addon for faster and clutterless browsing.