Was having trouble with laptop not being able to print. Called Apple support and they directed me to upgrade to High Sierra which I did. Since then Firefox is unable to connect. Nothing I’ve tried has helped. I’ve uninstalled my add-ons, I’ve refreshed Firefox, but still get the unable to connect screen. I’m frantic since I use my laptop for my home business filing payroll reports. It’s time to do this. Please help me. I’m writing this on my iPad since it is the only way I can connect to Firefox. I have Firefox Quantum 64 installed. Oh and at one point it said that I had to,verify my account. It would not proceed since I was not connected to the internet.