I am running Firefox 100.0.2 64 bit and now after literally years of visiting https://www.metrobyt-mobile.com/ to pay my mobile bill every month, it won't open the page. [See image of error]. I have gone into settings | browser privacy and tried turning off blocking for cookies, tracking content, cryptominers, and fingerprinters. No difference. I have gone into Enhanced Tracking Protection and clicked on Manage Exceptions and it won't give me an option to add the website. The site opens normally in Chrome. I find the instructions for "What to do if a site seems broken", but there is no shield or broken shield next to the web site address to click on. [See second image].