Firefox 52.O.2 problem

Something scrambled my Firefox set up today. When I reconfigured and eventually also reinstalled Firefox and x-notifier I found that Hotmail and Yahoo now require me to sign in every time I open them with x-notifier. Also the Hotmail and Yahoo icons have disappeared from the dropdown window. I have tried many times to check the Yahoo and Hotmail sign in page option to keep me signed in, but that is not happening. Any suggestions for restoring full functionality would be apprfeciatred. Google mail is not affected.