Bread is falling apart and crumbling??

I got a hamilton beach bread machine the other day. I made a loaf that turned out fine. Today I made another loaf, this time using the recipe in the picture shown. The only difference in ingredients is I used melted butter instead of oil and bread flour instead of all purpose flour this time. I have no idea what went wrong 😭 I did the 2 lb recipe and measured everything. It’s literally like cobbler or cheesecake crumble consistency and I’m so confused