My App buttons disappear

I created an app but it works fine testing on the web, but when I test live on my mobile, the buttons are off bottom of screen. I use fit container and didn’t use scroll feature so I don’t understand why.

My app is called “animal sounds”, it is a public project

can you share a link to your project here so we can take a look at it for you?

Thanks!

Here is the link
https://x.thunkable.com/copy/921e60e6dfae0dc15595db3b532ae036

The “Animals” screens shows buttons that are missing but Colour, Shapes, Numbers screebs don’t show buttons.

Thanks for helping me with this