Show us what you're getting when you try the site. I assume this is the site. https://www.national-lottery.co.uk/ I'm in the US on the east coast and it works for me. see screenshot Did you try with Firefox in Safe Mode? https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_how-to-start-firefox-in-4troubleshoot-modesf5safe-modesf You can also try the option Forget About This Site, but make sure you know the login if you have one. Just right click the site in the browser history to get the option. see screenshot https://support.mozilla.org/en-US/kb/remove-websites-address-bar-suggestions