Problems with the menu on the phone

Hi, I want to make a game for phone, everything is going ok, but I have a problem with the menu, when I test it on the phone it doesn’t appear on the whole screen, what should I do? I tried some things but they didn’t work.

link: game build

Is it in its own scene? Are you centering camera on it? Did you try no changes to game size and see what it looked like? Cute game.

I have now changed the resolution and it looks good, I hope it will be ok like that, and thank you!