I-Firefox Isithangami Sokwesekwa

Is there a simple method to turn off the annoying popup notifications about upgrading Firefox? I don't want to upgrade, FF seems to be working fine. Sometimes updates bring new problems.

I'm not a programmer, so I'm hoping there is a simple fix to stop update notices. I think it was a bad idea to have them appear in front of other websites. They often popup when I'm watching something on Netflix.

Hello, I've been dealing with this issue for some time now, but I don't know when it started. One day pages started being displayed with Impact as my body copy, but I never changed anything about my fonts in Firefox. I thought it was something with my system fonts, but I've since uninstalled copies of Impact on my Windows 10 PC. I'm not sure where else to look, but Impact is a difficult font to read as it's super bold & condensed. Makes reading body copy, especially small type, hard to navigate.

Any help would be greatly appreciated!

Thank you in advance!