I can't submit a website on itch.io, but I swear I worked.
Viewing post in End of week and this week's jam!
Sorry for my discouraging words towards you... You can post your website on itch by simply scrolling down to the in the posting section and find the drop down box which refers to "Kind of project" and select the HTML ONE, then you can scroll again downside to reach the upload section and drop your all files zipped with a "index.html" named file which would the main start point of the project.. Make sure to enter you Website link in the description cuz itch website viewer is kinda slow and sucks. Good luck for your future projects and jam.
I believe you! It's possible to upload a website as a zip to itch.io and submit that - it's even possible to make it viewable in-browser so people can view it without downloading anything. If you want to, feel free to do that and submit to another jam (they're weekly), but of course you don't need to, the main thing is to have something to work towards so I'm glad you got work done!