Update: turned out I could not log into any website! I cleared cookies, deleted all private data, turned on tracking, ensured cookies were enabled. Not worked.

Update: turned out I could not log into any website! I cleared cookies, deleted all private data, turned on tracking, ensured cookies were enabled. Not worked. After reinstalling Firefox, I'm back in business. Fwiw, I also have had Firefox lock up twice this week on my laptop. I'm thinking that Firefox just is not as stable as Chrome :(