lol yeah. Originally I kept checking the status by going to gbjam-11 but kept getting a 404, so I just assumed the page wasn't up. I've been biting my tongue about it for a while, but I had to say something xD
I had noticed it before but I was reluctant to change it because of the knock-on effect it might have. I think itch.io are mailing people about the old URL. Thankfully I made a new jam to replace the old URL and put up a redirect and I think that should curtail any problems.