oh so there is where the issue is? i was thinking it was the game and rebuild the game at least 3 times! hahaha i need to look into how to change it on the itch page! thank you very very much!
I guess you already know how to change that but just in case you don't, you can go to your game's page (not the jam page, the game page https://devboyexe.itch.io/quiet-days), then go to "Embed options" and there you can change the viewport size
Edit: here's a screenshot: https://imgur.com/a/744U08N