Click that button you are seeing on the bottom left (Advanced), and then "Proceed to site anyway" on the next page.

This is the SSL Cert issue I mentioned earlier, which is why you see what you do. The Cert expired in June 2019 and just needs to be renewed. Check the https info (probably in red or with warning symbol) at the start of the URL address window to verify once the page appears if you're still wanting to explore further.