Cloudflare says site down, but only on Safari

I’m unable to view, on Safari, both on my MacBook and my iPad, but does work on safari on iPhone. Also works fine on all devices using Chrome or Firefox. Wife’s iPad and iPhone also can access the website using safari. Checked it’s not blocking me but if it was it would block all devices as all on same IP/Wifi. Have changed DNS settings to Google or Cloudflare but still same. Flushed browser cache, tried private browser but always gives same error, see attached screenshot. I know I could just use chrome instead but I’d rather fix the issue. Very strange, only affecting me, and only on 2 devices. Reset network settings also didnt work. Any ideas?

Also works fine, on safari, on my MacBook and iPad if I access the backend of the website eg /admin