I think you accidentally clicked on the blue 'Make your own games' link at the bottom, under the game box! ☺
(I didn't remove it because this should just be a temporary fix, sorry!)
By the way, I added an option to disable achievements in the game. If you'd like, you can try turning them off to see if that "fixes" the issues on itch.io. Sorry again for all the trouble–I have no idea why everything's acting up all at once this week, lol.