Did the last update to firefox change a lot of things

I Believe that the last update to firefox changed a lot of things in my PC. Passwords are not working. I am having to change them every other day because it says the one I used is in correct. Amazon has lost my info about orders. My contact number says it is in use with another account. email is not working like it has. My calendar has lost all my appointments that were on it. this is just a few that I have noticed.