You forgot one important and helpful step: clear your cookies if simply trying a second or third time does not work. It will be time for clearing your cookies and try it again with a same browser, but if it does not work again, let's move to another browser and repeat those necessary steps.
you need to clear all the browser data, not just cookies. from my experience with betfury page not loading issues, a simple ctrl + f5 seems to fix most of them.
It could also be a problem with your Internet connection and not even with your browser. If you notice that the Betfury platform is not loading on a browser, before trying out the Betfury platform on another browser, first try to make sure that another web page is opening on the browser you're using so that you can be certain that your Internet connection is strong. If your Internet connection is not strong enough or temporarily glitched, you will encounter some problems trying to log into the BetFury platform, just as with any other betting platform.