I've been using Fios service for about a week now and been getting "SSL certificate" error with the MyFios app trying to use the Internet management functions, and a similar error trying to connect via the web on MacOS with Chrome and Safari browsers: "We encountered an error while processing your request. Please try again later."
After abysmal phone help, they suggested: "please log out/ into the app and advise if you're still experiencing this issue."
Which I did and had done numerous times, and deleted app, reinstalled, turned off fingerprint login, etc. Still the same problem.
Now, in the inimitable style of Verizon help, I am being ghosted - not a peep.
Of course they already charged me for my 1st month online. THAT always works for some reason.