You mean the embed on your site? The address changes when you update the game on itch.io; please get a new embed code.
Viewing post in My game is not working anymore on itch.io
Hi, this is the url I see from embeded section information: https://itch.io/embed-upload/7215396?color=333333
It seems it is not working even though a few days a go it did it
No, you simply do it like the first time. If that doesn't work, that means it's more serious and you need to contact support.