Hi, 3 Bar Menu --> Add-ons --> Extensions

Probably will only be able to Disable it but if the option is there, uninstall it.

I would think those are older instructions.

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

Hello momofonedaughter,

Your system details show that you have yet another extension installed that is a browser hijacker : Search-Encrypt, which is malware that you need to get rid of.

(HeartQuizzes is not an extension that is listed on the Mozilla Add-ons page, so I suspect that it too is a browser hijacker, unless you installed it yourself)

See: https://forums.malwarebytes.com/topic/226686-removal-instructions-for-search-encrypt/

Go to the Firefox menu (≡) => Add-ons => Extensions, and remove the Search-Encrypt and HeartQuizzes.

Next step : run malwarescans.

Further information can be found in this article : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no

Run most or all of the listed malware scanners. They all work differently - what one program doesn't pick up, the other might.