My Mac safari is not working

What version of Safari? That site opens without issue for me on Safari 14 under macOS 10.14.

Are you running any anti-virus or so-called "cleaning" software?

Are you running more than one ad blocker?

moo168 wrote:

My Mac Safari is not working

https://discussions.apple.com/content/attachment/ddd8b740-3254-4f52-966a-4430688c403b

See if there is anything here:

If Safari on Mac doesn't open a webpage or isn't working as ...

That doesn't mean Safari is not working, that likely means the site doesn't meet Apple's security requirements or some such.

Try a different browser, I like Firefox but there are others.