Since a few days ago I've been unable to access one specific website, as it keeps timing out. It's a community site for an old PC game, Jazz 2 Online. I'm not posting a direct link to try and avoid being flagged as just spam, but it should be the first result on google. The site times out whether I'm connected via my wifi at home or my mobile data (whether I go via the URL or the IP address), but I can access it just fine from a friend's place, via a different ISP. I've confirmed that the site in question is running normally, too.
Is anyone else able to access the site using Optus? I wouldn't expect the issue to lie here, but I'm struggling to find a realistic explanation for the problem. Does anyone have any suggestions for troubleshooting this issue?