character not solid?

in my new game I just finished the character sprite and gave it run and jump made it moveable and made it solid yet it is still falling through the ground! does anyone know why this is?

Because your ground is movable

@“JR 01” It’s not that I was just messing around and I changed it. It was normally not movable

and now for some reason with just normal run and jump are the only behaviors on it it is disappearing when you press left

Its not disapearing when I press left, but it does flip upside down.
You could delete the flip behavior or set it to vertical.

hey! I did something because it is working now! it was probably some kind of glitch because when I reloaded it worked!